The Christensen prosthesis system is used to treat temporomandibular joint (TMJ) disorders through either hemiarthroplasty or total joint replacement. Studies have found that the Christensen fossa-eminence prosthesis for hemiarthroplasty provides better results than the total joint replacement. Additionally, customized total joint prostheses like the TMJ Concepts system lead to improved outcomes over the off-the-shelf Christensen prosthesis in terms of incisal opening, pain, function, and diet. The Christensen prosthesis can also effectively treat rheumatoid-induced TMJ disorders, improving pain, function, and satisfaction for most patients.
Abstract: Immediate implant placement has been the acceptable procedure for the past two decades. Perhaps
the most important aspect of any implant surgery in accordance with the successful procedure is implant
surgery and bone to implant contact.The aim of this article is to describe a clinical case in which a fractured
maxillary canine was replaced by an immediately loaded postextraction implant using a simplified technique,
which permits a reduction of the number of implant components and consequently a lower cost of treatment,
while at the same time maintaining acceptable aesthetic and functional outcomes.
Key words: Immediate implant placement, Immediate loading, Immediate provisionalisation, Esthetics
This journal club presents a case of prosthetic
rehabilitation of an amputated thumb. It emphasizes that
prosthetic replacement is a better option for aesthetic and
psychological improvement, particularly in cases where the
victim is unwilling to undergo complicated surgical procedures for reconstruction of thumb or where functioning
of thumb cannot be restored even by multiple surgeries. In
the present case, a 20 years old female patient, with
missing thumb of her right hand was rehabilitated aesthetically by a non-invasive and cost effective prosthetic
procedure by using heat temperature vulcanizing silicone
material. The prosthesis (the thumb) was attached using
medical adhesives. On 3 months recall appointment, no
complications were observed. The prosthesis was in good
shape and required no further intervention. The prosthetic
thumb lacks the sensation of a normal or reconstructed
thumb, although it does not require the multiple procedures
of surgical reconstruction and the accompanying loss of
time for rehabilitation and healing
Abstract: Immediate implant placement has been the acceptable procedure for the past two decades. Perhaps
the most important aspect of any implant surgery in accordance with the successful procedure is implant
surgery and bone to implant contact.The aim of this article is to describe a clinical case in which a fractured
maxillary canine was replaced by an immediately loaded postextraction implant using a simplified technique,
which permits a reduction of the number of implant components and consequently a lower cost of treatment,
while at the same time maintaining acceptable aesthetic and functional outcomes.
Key words: Immediate implant placement, Immediate loading, Immediate provisionalisation, Esthetics
This journal club presents a case of prosthetic
rehabilitation of an amputated thumb. It emphasizes that
prosthetic replacement is a better option for aesthetic and
psychological improvement, particularly in cases where the
victim is unwilling to undergo complicated surgical procedures for reconstruction of thumb or where functioning
of thumb cannot be restored even by multiple surgeries. In
the present case, a 20 years old female patient, with
missing thumb of her right hand was rehabilitated aesthetically by a non-invasive and cost effective prosthetic
procedure by using heat temperature vulcanizing silicone
material. The prosthesis (the thumb) was attached using
medical adhesives. On 3 months recall appointment, no
complications were observed. The prosthesis was in good
shape and required no further intervention. The prosthetic
thumb lacks the sensation of a normal or reconstructed
thumb, although it does not require the multiple procedures
of surgical reconstruction and the accompanying loss of
time for rehabilitation and healing
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...Abu-Hussein Muhamad
Abstract: Severe atrophy of the inferior alveolar process and underlying basal bone often results in problems with a lower denture. These problems include insufficient retention of the lower denture, intolerance to loading by the mucosa, pain, difficulties with eating and speech, loss of soft-tissue support, and altered facial appearance. These problems are a challenge for the prosthodontist and surgeon. In this case report, patient with resorbed edentulous mandible was successfully rehabilitated using two dental implants placed in the interforaminal region with ball abutments opposing conventional maxillary complete denture. Key Words: dental implants; dental prosthesis, implant-supported; resorption,
occlusal considerations for Implant supported Prosthesis /certified fixed or...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Extraction and Immediate Implant Placement, and Provisionalization with two Y...Abu-Hussein Muhamad
Extraction and Immediate Implant Placement, and Provisionalization with two Years Follow-up: A Case Report. PDF
Abu-Hussein Muhamad, Bajali Musa, Abdulgani Azzaldeen
Over time, progressively shorter implants have been placed such that short implants are now available that are less than 6 mm in length. The viability and high success rates seen with short implants can be explained by osseointegration, the macro geometric design of the implant, as well as physics and the distribution of forces. This paper was aimed to review the stability and survival rate of short implants under functional loads. Numerical and clinical studies were reviewed. Keywords: Short dental implants, sinus augmentation, factors affecting bone regeneration in dental implantology
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
Used in the right conditions, SFOA is highly successful and has a positive impact on the patients psychosocial status.A combined orthodontic and orthognathic surgery approach is accepted as the standard of care for patients who have a severe skeletal jaw discrepancy with facial asymmetry.
But some disadvantages have been recognized.
One drawback is the long presurgical treatment time that typically worsens facial appearance and exacerbates the malocclusion. In some countries, these disadvantages have caused patients to seek plastic surgeons who are willing to perform orthognathic surgeries without collaboration with orthodontists or consideration for the final occlusion.
Recently, to address patient demand and satisfaction, the surgery-first approach was introduced to overcome some disadvantages associated with the conventional surgical orthodontic approach.1991-Brachvogel et al. suggested the potential advantages of a surgery-first approach.
In that article the advantages of post-surgical orthodontics are outlined as follows:
1) Orthodontic movement does not interfere with compensatory biological responses.
2) Dental movements can be based on an already corrected skeletal pattern.
3) Some surgical relapse can be managed during treatment.
2009: Nagasaka et al., popularized SFOA54. Nagasaka et al1 were among the first to actually carry out SFOA using miniplates for post-surgical orthodontic treatment
The 2011 symposium presented the surgery‑first approach and created broader interest in the complete elimination of time‑consuming preoperative orthodontic treatment
Immediate Placement and Provisionalization of Maxillary Posterior Single Impl...Abu-Hussein Muhamad
Functional immediate load is the most recent concept. This describes a load, within physiological limits, applied to implants before the osseo-integration process is completed. One of the treatment options offered to patients requiring replacement of one or more teeth is the use of prostheses supported by implants. Patients nowadays demand greater aesthetic and functional restorations; therefore, the clinician tries to reduce implant load time. All this leads to the implementation of several modifications to the conventional surgical and prosthetic protocol leading to a reduction in the load time of the implant. This is a case report of the immediate loading of posterior implant.
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
Dentistry, Periodontics and General Dentistry.
This presentation reviews common functional and esthetic problems associated with extraction of teeth and current methods and surgical techniques to minimize loss of bone and soft tissue
Short Term Analysis of Clinical, Functional Radiological Outcome of Total Kne...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...Abu-Hussein Muhamad
Abstract: Severe atrophy of the inferior alveolar process and underlying basal bone often results in problems with a lower denture. These problems include insufficient retention of the lower denture, intolerance to loading by the mucosa, pain, difficulties with eating and speech, loss of soft-tissue support, and altered facial appearance. These problems are a challenge for the prosthodontist and surgeon. In this case report, patient with resorbed edentulous mandible was successfully rehabilitated using two dental implants placed in the interforaminal region with ball abutments opposing conventional maxillary complete denture. Key Words: dental implants; dental prosthesis, implant-supported; resorption,
occlusal considerations for Implant supported Prosthesis /certified fixed or...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
00919248678078
Extraction and Immediate Implant Placement, and Provisionalization with two Y...Abu-Hussein Muhamad
Extraction and Immediate Implant Placement, and Provisionalization with two Years Follow-up: A Case Report. PDF
Abu-Hussein Muhamad, Bajali Musa, Abdulgani Azzaldeen
Over time, progressively shorter implants have been placed such that short implants are now available that are less than 6 mm in length. The viability and high success rates seen with short implants can be explained by osseointegration, the macro geometric design of the implant, as well as physics and the distribution of forces. This paper was aimed to review the stability and survival rate of short implants under functional loads. Numerical and clinical studies were reviewed. Keywords: Short dental implants, sinus augmentation, factors affecting bone regeneration in dental implantology
Indian Dental Academy: will be one of the most relevant and exciting training
center with best faculty and flexible training programs for dental
professionals who wish to advance in their dental practice,Offers certified
courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry,
Prosthetic Dentistry, Periodontics and General Dentistry.
Used in the right conditions, SFOA is highly successful and has a positive impact on the patients psychosocial status.A combined orthodontic and orthognathic surgery approach is accepted as the standard of care for patients who have a severe skeletal jaw discrepancy with facial asymmetry.
But some disadvantages have been recognized.
One drawback is the long presurgical treatment time that typically worsens facial appearance and exacerbates the malocclusion. In some countries, these disadvantages have caused patients to seek plastic surgeons who are willing to perform orthognathic surgeries without collaboration with orthodontists or consideration for the final occlusion.
Recently, to address patient demand and satisfaction, the surgery-first approach was introduced to overcome some disadvantages associated with the conventional surgical orthodontic approach.1991-Brachvogel et al. suggested the potential advantages of a surgery-first approach.
In that article the advantages of post-surgical orthodontics are outlined as follows:
1) Orthodontic movement does not interfere with compensatory biological responses.
2) Dental movements can be based on an already corrected skeletal pattern.
3) Some surgical relapse can be managed during treatment.
2009: Nagasaka et al., popularized SFOA54. Nagasaka et al1 were among the first to actually carry out SFOA using miniplates for post-surgical orthodontic treatment
The 2011 symposium presented the surgery‑first approach and created broader interest in the complete elimination of time‑consuming preoperative orthodontic treatment
Immediate Placement and Provisionalization of Maxillary Posterior Single Impl...Abu-Hussein Muhamad
Functional immediate load is the most recent concept. This describes a load, within physiological limits, applied to implants before the osseo-integration process is completed. One of the treatment options offered to patients requiring replacement of one or more teeth is the use of prostheses supported by implants. Patients nowadays demand greater aesthetic and functional restorations; therefore, the clinician tries to reduce implant load time. All this leads to the implementation of several modifications to the conventional surgical and prosthetic protocol leading to a reduction in the load time of the implant. This is a case report of the immediate loading of posterior implant.
Description :
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Atrophied Edentulous Mandible with Implant-Supported Overdenture; A 10-year f...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
Indian Dental Academy: will be one of the most relevant and exciting
training center with best faculty and flexible training programs
for dental professionals who wish to advance in their dental
practice,Offers certified courses in Dental
implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic
Dentistry, Periodontics and General Dentistry.
This presentation reviews common functional and esthetic problems associated with extraction of teeth and current methods and surgical techniques to minimize loss of bone and soft tissue
Short Term Analysis of Clinical, Functional Radiological Outcome of Total Kne...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
A comparative study on the clinical and functional outcome of limb salvage su...NAAR Journal
The aim of this study was to analyze the survival, recurrence, complications as well as the quality of life (QOL) in tibial osteosarcoma (OSA) patients managed by limb salvage surgery (LSS), either by a prosthesis, resection or graft or by amputation. 106 tibial osteosarcoma patients were enrolled where 39 had custom-designed endoprosthetic arthroplasty (LSS1), 36 underwent resection and bone graft (LSS2) while only 31 underwent amputation. A Comparison was done based on post-operative survival rates, postoperative recurrence, and complications. The impact of the patient’s QOL was also evaluated.
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
biofunctional prosthesis system complete denture.pptxNikitaChhabariya
BPS denture meets the esthetic demand of patients with its unique Ivoclear teeth, which replicate anatomy of the natural tooth Ivoclear teeth are made up of 3 layers of cross-linked acrylic resins that contribute to a life-like appearance and resistance to wearing. BPS system uses a controlled heat/pressure polymerization procedure during which time the exact amount of material flows into the flask to compensate for shrinkage, which ensures a perfect fit. This pressure also optimizes the physical properties of the denture
implant-based prosthetic rehabilitation requires an understanding of associated anatomical structures. The ultimate predictability of an implant site is determined by the existing anatomy as related to dentition and the associated hard and soft tissues. Meticulous clinical assessment helps in determining the suitability of the potential site for implant placement. The purpose of this article is to present the clinical assessment for dental implants' placement to modulate peri-implant tissue characteristics in individual clinical need.
The denture-wearing history should provide information on the age of existing dentures, the frequency of denture replacement, the patient's experiences and expectations. It is important to identify whether any previous dentures have been successful as it may be suitable to copy features from a previously successful set. It will be important to manage expectations for those patients with a history of denture intolerance, yet technically satisfactory prostheses.
Clinical examination
Clinical examination should fully evaluate both the patient's anatomy and previous dentures to anticipate challenges and the potential to improve upon retention, stability, support, appearance and/or other factors. This should be undertaken in a systematic manner and would typically involve assessment of anatomy followed by an assessment of any existing dentures. This should follow a diagnostic process to determine if the patient presents with:
Technically adequate dentures on a favourable tissue base
Technically adequate dentures on an unfavourable tissue base
Technically inadequate dentures on a favourable tissue base
Technically inadequate dentures on an unfavourable tissue base.
Occlusion in complete denture must be developed to function efficiently and with the least amount of trauma to the supporting tissues. this ppt content Difference between artificial and natural dentition
Requirements of complete denture occlusion
Occlusal schemes for complete denture
Axioms for balance occlusion
Theories of occlusion
Concepts of occlusion
balance occlusion
Non-balance occlusion
Conclusion
covers overall every topic of occlusion in complete denture
all the techniques used in completedenture fabrication in condition like flabby tissue and resorbed rigdes plus patients having problem of gag. it includes various pictures and procedure of impression techniques.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
3. Introduction
Temporomandibular disorders (TMD) are disorders of the jaw muscles,
temporomandibular joints, and the nerves associated with chronic
facial pain. Any problem that prevents the complex system of muscles,
bones, and joints from working together in harmony may result in
temporomandibular disorder.
The treatment of temporomandibular joint (TMJ) dysfunction resulting from
internal derangement (ID), neoplasia, congenital malformation, or trauma,
as well as osteoarthritis, arthrotic changes, osteochondritis disseccans,
avascular necrosis, and rheumatoid arthritis is a topic of continued debate.
4. The Christensen prosthesis
A retrospective clinical study Donald C. Chase
Clinical study -patient selection
Patient selection was based on careful clinical evaluation and objective
evidence of ID or degenerative joint disease with the use of plain films,
arthrograms, and magnetic resonance imaging.
All patients exhibited significant joint pain and dysfunction.
Patients were unresponsive to nonsurgical therapies -6 months.
Pain and function (ability to eat) were measured on a visual analogue
scale (VAS), and incisor opening was measured with a therabite scale.
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY September 1995
5. These measurements were performed before surgery and 1, 3, 6, and 12 months after surgery,
and annual follow-up examinations given to all patients.
The majority of patients (77%) had earlier surgical treatment on the diseased joints.
Patients were treated in one of the following ways.
Placement of the glenoid fossa-eminence---disk retained
Placement of the glenoid fossa-eminence--disk not retained
Replacement of the total joint
6. Placement of the glenoid fossa-eminence---disk
retained-
22 patients and 40joints
All patients underwent arthroplasty with mobilization of the disk and
disk repositioning when necessary.
Retention of the disk was determined on the basis of disk quality and
simulated smooth function after placement of a highly polished Co-Cr
glenoid fossa-eminence prosthesis.
The prosthesis was held in place with bone screws and selected for
maximum coverage of the glenoid fossa-eminence and anatomic fit.
7. Placement of the glenoid fossa-eminence--
disk not retained
26 patients and 49 joints.
All patients in this group had conditions that had been
diagnosed as ID, joint dysfunction, or both.
few showed signs of fibrous ankylosis, and 14 joints (29%)
showed signs of bony ankylosis at the time of surgery.
All patients underwent arthroplasty with mobilization of
the disk or joint debridement if diskectomy had previously
been performed.
The prosthesis was selected as in the first group.
If the disk was still present and showed signs of
perforations, adhesions, or functional interference with the
glenoid fossa-eminence prosthesis, it was removed.
8. Replacement of the total joint
(21 patients and 34 joints)
All patients in this group except one with rheumatoid arthritis had
undergone earlier surgical procedures for treatment of ID or
degenerative joint disease.
In this procedure a glenoid fossa-eminence prosthesis was placed as
described for group 1.
In addition, the condylar process was replaced with a Co-Cr condylar
prosthesis with a molded PMMA
centric occlusion with maxillomandibular fixation at the time of
condylar prosthesis placement.
9. Result
Fossa-eminence with retention of disc- All patients had a significant decrease in pain
significant improvement in the ability to eat.
Fossa-eminence without retention of disk- surgical placement of a Christensen
fossa/eminence prosthesis in a joint pain except one patient who had no significant
improvement. One patient showed a decreased range of motion postoperatively (31 mm to 30
mm). Two patients required reoperation; one as a result of infection and one because of
improper prosthesis selection.
Total joint-Ninety five percent of patients showed a significant decrease in pain whereas 10%
showed no significant improvement. Eighty six percent showed a significant improvement in
ability to eat, whereas 14% were not significantly improved.
10. Comparison of 2 Temporomandibular Joint Total
Joint Prosthesis Systems
American Association of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 61:685-690, 2003
The TMJ Concepts total joint prosthesis is a custom-made device constructed from wrought
metals of titanium, titanium alloy, chromiumcobalt alloy (for condylar head only), and
ultrahigh–molecular weight polyethylene. The chromium-cobalt alloy head functions against
the ultrahigh–molecular weight polyethylene.
The Christensen (TMJ Inc, Golden, CO)
total joint prosthesis is an off-the-shelf
device made of cast chromium-cobalt
alloy. The devices used in this study
had a metal condylar head functioning
against a metal fossa.
11. In this retrospective study, analyzed the treatment records of 45
patients
The patient population was divided into 2 groups:
Group 1 consisted of 23 patients - CPs
group 2 consisted of 22 patients reconstructed with the TPs total
prosthesis
Both prostheses consisted of a fossa and a mandibular component
The TP was a custom-made and custom-fitted device derived
from computed tomography (CT) data using -- fabricating an
accurate anatomic plastic model of the patient’s jaws and TMJs.
12. The prosthesis was constructed on this model. The TP metal
components were wrought, and all parts were machined. The
fossa was made of a commercially pure titanium shell which
allows bone growth into the mesh to maximize stabilization of
the fossa component.
The CP components were off-the shelf products, and all
components were made of cast chromium-cobalt alloy The
fossa component had more than 30 choices of size and shape.
The surgeon selected the best fit intraoperatively.
3-4 fossa
6-8 ramus
13. Results
The TP group had statistically significant improved outcomes compared with the CP group
relative to postsurgical incisal opening, pain, jaw function, and diet.
Both groups showed good skeletal and occlusal stability.
14. Temporomandibular joint replacement in
rheumatoid-induced disease
Patient details-there were six women and only one man (case
4). Ages ranged from 26 to 76 years with a mean of 47.
Include persistent pain, anterior open bite, and limited opening.
Five patients had total bilateral joint replacement; the other
two had unilateral fossa replacement only.
These patients can often be managed medically with non-
steriodal antiinflammatory drugs, physiotherapy, and intra-
articular steroid injections
British Journal of Oral and Maxillofacial Surgery (2001) N. R. Saeed
seven patients -temporomandibular joints were
reconstructed using the Christensen Alloplastic Joint
System.
15. Complications- One patient developed
temporary weakness of the facial nerve and
another patient developed bilateral haeatomas
and Frey’s syndrome.
Objective assessment- by measuring the interincisal
distance before and after operation.
Subjective assessment The preoperative and postoperative
pain and dietary interference visual analogue scores.
16. Patient satisfaction-
Six of the seven patients reported they were very satisfied with their
operation. The remaining patient was satisfied with the joint placed on
the right side but dissatisfied with the joint placed on the left-case 4
there was a slight decrease in pain and patients had
presented with an anterior open bite
17. Result
All patients showed improved visual analogue scores for pain and dietary
interference after their operations and an improvement in interincisal
distance was recorded in five of the patients.
Overall satisfaction was high and no patient has rejected the prosthesis
or had any substantial complications.
The mean follow up period is 30 months (range 8–50).
18. Conclusion
The Christensen prosthesis are of various modifications they are available in
both forms custom-made and prefabricated in which There is one shape for
the condyle and a choice of40 TO 44 different shapes for the fossa
component. These fossa components are also used for hemiarthroplasty.
Christensen metal fossa-eminence prosthesis for hemiarthroplasty gives batter
results then the Christensen metal-on-metal total joint prosthesis.
19. References
The Christensen prosthesis* A retrospective clinical study Donald C. Chase (ORAL SURG ORAL
MEO ORAL PATHOL ORAL RADIOL FNDOD 1995;80:273-8)
Comparison of 2 Temporomandibular Joint Total Joint Prosthesis Systems American Association
of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 61:685-690, 2003
Temporomandibular joint replacement in rheumatoid-induced disease British Journal of Oral
and Maxillofacial Surgery (2001) N. R. Saeed
Factors to consider in joint prosthesis systems Larry M. Wolford, DMD Proc (Bayl Univ Med Cent)
2006;19:232–238