This document provides information about fabricating a single complete denture opposing natural teeth. It discusses common occlusal issues that can arise in these cases such as tilted molars and how to address them. Methods for achieving balanced occlusion are described, including functional chewing techniques and articulator-based equilibration. The document also covers occlusal modification of natural teeth, materials used for the denture occlusal surfaces, and combination syndrome.
The patient who requires a single denture opposing a natural or restored dentition challenges the clinician even more than the completely edentulous patient does. This is due to the biomechanical differences in the supporting tissues of the opposing arches. So a proper evaluation, correction of the existing factors and proper sequence of denture construction is necessary to give a more stable prosthesis.
There are three basic phases of the digital workflow when designing and/or fabricating removable partial denture frameworks; data acquisition, designing (computer aided design (CAD)), and computer-aided manufacturing (CAM). The bulk of this presentation is dedicated to the design steps used in this workflow utilizing sample maxillary and mandibular casts
The patient who requires a single denture opposing a natural or restored dentition challenges the clinician even more than the completely edentulous patient does. This is due to the biomechanical differences in the supporting tissues of the opposing arches. So a proper evaluation, correction of the existing factors and proper sequence of denture construction is necessary to give a more stable prosthesis.
There are three basic phases of the digital workflow when designing and/or fabricating removable partial denture frameworks; data acquisition, designing (computer aided design (CAD)), and computer-aided manufacturing (CAM). The bulk of this presentation is dedicated to the design steps used in this workflow utilizing sample maxillary and mandibular casts
One of the best seminar of the author. Covered in detail regarding the increasing vertical dimension, centric relation, methods to record centric relation, philosophies of occlusion and in detail everything about full mouth rehabilitation.
Failures in Fixed Partial Denture
(Prosthodontics FPD- Dental science)
Various types of failures in the fabrication of fixed partial denture
Dr.Sachin Sunny Otta
St.Gregorios Dental College,Kothamangalam,Ernakulam
Recent advances in prosthodontics / crown & bridge courses by indian dental a...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
0091-9248678078
this presentation has all the techniques in impression making in the fabrication of an RPD.
The presentation is available on request. Mail me at apurvathampi@gmail.com
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.
A single complete denture is a complete denture that occludes against some or all of the natural teeth, a fixed restoration, or a previously constructed removable partial denture or a complete denture.
Opposing natural teeth that are sufficient in number and do not necessitate a fixed or removable partial denture.
Opposing a partially edentulous arch in which the missing teeth have been or will be replaced by a fixed partial denture.
Opposing arch with an existing complete denture.
One of the best seminar of the author. Covered in detail regarding the increasing vertical dimension, centric relation, methods to record centric relation, philosophies of occlusion and in detail everything about full mouth rehabilitation.
Failures in Fixed Partial Denture
(Prosthodontics FPD- Dental science)
Various types of failures in the fabrication of fixed partial denture
Dr.Sachin Sunny Otta
St.Gregorios Dental College,Kothamangalam,Ernakulam
Recent advances in prosthodontics / crown & bridge courses by indian dental a...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
0091-9248678078
this presentation has all the techniques in impression making in the fabrication of an RPD.
The presentation is available on request. Mail me at apurvathampi@gmail.com
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.
A single complete denture is a complete denture that occludes against some or all of the natural teeth, a fixed restoration, or a previously constructed removable partial denture or a complete denture.
Opposing natural teeth that are sufficient in number and do not necessitate a fixed or removable partial denture.
Opposing a partially edentulous arch in which the missing teeth have been or will be replaced by a fixed partial denture.
Opposing arch with an existing complete denture.
A single complete denture is a removable appliance that fits against some or all of the natural teeth, a fixed restoration, or a previously constructed removable partial denture or a complete denture
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
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
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
Problems encountered during complete denture constructionMahmoud Shebl
Not all cases are similar. Human variation occurring due to genetic and environmental causes necessitates unstandardized treatment planning for patients in the clinic. a good dentist must be aware of problems that could arise during his work to be ready to manage it. this small lecture focuses on some problems encountered in clinic during complete denture construction and some ways to overcome them.
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
a detailed account of the principles of tooth preparation with main reference from Shillingburg
The presentation is available on request. Mail me at apurvathampi@gmail.com
prosthodontic management of acquired defects of mandible /certified fixed ort...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
Pre prosthetic surgery /certified fixed orthodontic courses by Indian dental ...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
0091-9248678078
Preprosthetic surgery /certified fixed orthodontic courses by Indian dental a...Indian dental academy
Welcome to 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 has a unique training program & curriculum that provides students with exceptional clinical skills and enabling them to return to their office with high level confidence and start treating patients
State of the art comprehensive training-Faculty of world wide repute &Very affordable
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.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
2. CONTENTS
Introduction
Different clinical scenarios
Common occlusal disharmonies and adjustment.
Methods used to achieve a harmonious balanced
occlusion
Occlusal modification
Occlusal materials for the single denture
Combination syndrome
Conclusion
References
2
4. •Many patients become edentulous in one arch
while retaining some or all of their natural
teeth in the opposing arch. In this situation a
single complete denture is fabricated.
4
6. 6
Midline fracture of denture
Greater magnitude of forces
Dislodgement of denture
Changes in the underlying bone
Wearing of natural teeth
Difficulty to obtain occlusal balance
8. •Different Clinical Scenarios:
1. Natural teeth that are sufficient in number not to
necessitate a fixed or removable partial denture.
2. A partially edentulous arch in which missing teeth
have been or will be replaced by RPD.
3. A partially edentulous arch in which missing teeth
have been or will be replaced by FPD.
4. An existing Complete denture.
8
9. 9
• Completely edentulous maxillary arch
opposing a mandibular complement
of natural teeth with missing first
molars, or second premolars, or both.
• Remaining molars are severely inclined
mesially and their distal halves supra erupted .
• This results in maxillary denture being easily
dislodged during functional movements.
10. 10
If molars are not severely tilted - reshaped by
selective grinding.
• Stephens - in this situation distal half of the
occlusal surface should be ground flat and the
denture teeth set to occlude only with that area,
leaving the mesial cusps out of contact - prevent
contact of denture teeth on an inclined plane.
11. 11
When more than a moderate amount of tooth
reduction is found necessary
• Restore the tilted molars with cast gold crowns,
onlays, or a fixed bridge if a large edentulous
space exists mesial to the molars.
• If a tooth supra erupted beyond restoration -
should be extracted.
12. 12
If a large space does exist
mesial to the tilted molars
• RPD restore mesial half of molars.
• By lowering distal cusps and restoring
mesial cusps using an onlay mesial
rest, occlusal surface may be restored
to an acceptable form.
13. 13
When insufficient
mandibular teeth are
left to occlude with a
complete maxillary
denture
- Loss of maxillary
anterior alveolar ridge
along with
hyperplastic tissue
changes.
• When all molars are
missing
RPD is indicated.
15. 15
Those that dynamically equilibrate
occlusion by use of a functionally
generated path
Those that statically equilibrate occlusion
using an articulator programmed to
simulate patient’s jaw movement.
16. 16
Functional Chew-in Techniques
• Stansbury described first functional chew in
technique (1928) for an upper complete denture
opposing lower natural teeth.
• He suggested using a compound maxillary rim
trimmed buccally and lingually so that the occlusion
is free in lateral excursions.
• Carding wax is then added to the compound rim, and
patient is instructed to perform eccentric chewing
movements
17. 17
Carding wax molded to functional movements,
while compound in central fossa acts as a guide
to preserve vertical dimension.
Generated occlusion rim is removed from mouth
Stone is vibrated into wax paths of cusps.
Upper cast is again fastened to the articulator
with generated occlusion rim and stone cusp
path record.
Stone cusp path record is secured to lower
member of articulator with plaster.
18. 18
Denture teeth first set to the original lower
cast.
After esthetics have been approved at the try-in,
lower cast removed and lower chew-in cast
record is then secured to articulator.
All interfering spots are ground until
incisal guide pin prevents further closure.
19. 19
Vig’s technique
• Use of a fin of resin placed into central
grooves of lower posterior teeth, instead of
using compound.
• Resin fin maintains vertical dimension and
helps to locate the interfering lower cusps.
• In eccentric movements lower cusp tips are
ground until equal contact occurs between
teeth and resin.
• Fin is then built up using a soft wax, and a
functional path is recorded.
20. 20
• Use a maxillary rim of softened
wax.
• Lateral and protrusive chewing
movements are made so that the
wax is abraded, generating
functional paths of the lower
cusps.
• This is continued until correct
vertical dimension has been
established.
Sharry’s technique
21. 21
. A compound maxillary rim is formed.
• A thickness of recording matrix, made up of three
sheets of medium -hard pink baseplate wax and
two sheets of red counter wax, is added to the
buccal and lingual surfaces of the compound rim.
• Wax path is boxed, and minimal-expansion
artificial stone is poured in it. This forms the
generated-path stone core.
• Two maxillary bases, one for recording generated
path and other for setting teeth.
Rudd
Technique
22. 22
• Upper cast is mounted on an
articulator using facebow.
• Lower cast related to upper by a
centric interocclusal record at an
acceptable VD.
• Buccal-lingual position of lower
teeth and their relation to the
upper arch is studied
Articulator
Equilibration
Techniques
23. 23
• If denture teeth appear to be placed too far to the buccal
when articulated with lower buccal cusps, they are reset to
oppose the lower lingual cusps
24. 24
• If the denture teeth appear to be placed too far lingually
when articulated with lower lingual cusps, they are reset to
oppose lower buccal cusps
25. 25
• Once holding cusps have been selected, inclines of
remaining cusps are reduced.
28. 28
• Maxillary and mandibular casts mounted on articulator,
using a provisional centric relation record at an
acceptable vertical dimension.
• A maxillary base made and denture teeth are set.
• If lower natural teeth interfere with placement of
denture teeth - adjusted on the cast and area marked
with a pencil.
Swenson’s method
29. 29
• Natural teeth modified using marked diagnostic cast as
a guide.
• Occlusal modifications are completed, a new diagnostic
cast of lower arch is made and mounted on the
articulator.
• Denture teeth reset for try-in.
• Simple, but time consuming if several impressions and
mountings must be made.
30. 30
• U shaped metal occlusal template that is slightly convex
on the lower surface.
• When placed on occlusal surfaces of remaining teeth,
cusps to be adjusted are identified.
• Stone cast is modified to a more acceptable occlusal
relationship and areas reduced are identified by marking
with a pencil.
• Cast is then used as a guide for modifying natural teeth.
Yurkstas method
31. 31
• Lower diagnostic cast is mounted as in previous
procedures.
• Necessary modifications are made on stone cast occlusal
surfaces.
Bruce method
32. 32
• A clear acrylic resin template fabricated over
modified stone cast
• Inner surface of template coated with pressure
indicating paste and placed over patient’s natural
teeth.
• Interferences are readily noted through template
and are removed by reshaping occlusal anatomy.
• Process repeated until template seats properly.
33. 33
Involves making natural teeth fit to established plane and
inclines of maxillary porcelain teeth.
First casts are mounted on a programmed articulator.
Maxillary artificial teeth arranged to obtain best possible
occlusal balancing contacts.
Boucher’s method
34. 34
Interferences removed by movement of maxillary
porcelain teeth over mandibular stone teeth.
Ground areas marked on cast and natural teeth altered
using this as guide
36. 36
• Wear very slowly - occlusal vertical dimension is
maintained.
• Predisposed to chipping and fracture
• More difficult to equilibrate, since their surfaces do
not mark well with articulating paper.
• Cause rapid wear of opposing natural teeth.
• Contraindicated with acrylic resin posteriors and
bruxism
Porcelain Teeth
37. 37
Acrylic Resin Teeth
• Cause no wear of opposing natural teeth.
• Contraindicated in bruxers
• Wear - results in loss of vertical dimension.
38. 38
Gold Occlusals
• Best material to oppose natural teeth
Technique described by Wallace 1964
Denture with acrylic resin teeth worn by patient
for few weeks
Occlusal index of hard stone of teeth and
denture made
Occlusal surface of posterior teeth reduced by
1mm
39. 39
Central channel is cut antero – posteriorly
Inlay wax is flowed on the channels
Wax pattern is cast in gold ; cemented with self
cure acrylic resin
40. 40
Acrylic Resin with Amalgam Stops
• Amalgam inserts reduce occlusal wear
• Technique is simple, less time consuming ,
expensive.
• After acrylic teeth have been balanced , occlusal
preparations are made in acrylic teeth,
extending to include as much of the articulating
paper tracing as is possible.
41. 41
• Amalgam is condensed into preparations and
eccentric movements are made.
• Thus centric holding area as well as some of the
excursions are recorded in amalgam by
articulator that has been programmed to closely
simulate patient’s jaw movements.
42. 42
IPN Resin
• To minimize disadvantages of acrylic resin and
porcelain teeth and enhance certain qualities in
each.
• Consists of an unfilled, highly cross-linked,
interpenetrating polymer network.
• Wear significantly less
44. 44
Combination syndrome :
The characteristic features that occur when an edentulous
maxillae is opposed by natural mandibular anterior teeth and
a mandibular bilateral extension-base removable partial
denture, including loss of bone from the anterior portion of
the maxillary ridge, hyperplasia of the tuberosities, papillary
hyperplasia of the hard palate’s mucosa, supraeruption of the
mandibular anterior teeth, and loss of alveolar bone and ridge
height beneath the mandibular removable partial denture
bases; syn, anterior hyperfunction syndrome
GPT-9
45. 45
• Ellsworth Kelly (JPD1972:27;140) gave the term
COMBINATION SYNDROME to those changes that are
seen in patients with maxillary complete denture and a
mandibular bilateral distal extension RPD.
48. 48
First change to occur
• Acc to Kelly et al (JPD1972:27;140) - loss of bone from
the anterior part of the maxillary jaw.
• Saunders et al (JPD 1979:41:124) - bone resorption
under the mandibular partial denture base.
50. 50
Occlusal plane migrates up in anterior region
and down in posterior region.
Bone resorption under mandibular denture
base
Tendency to develop epulis fissuratum
associated with labial flange.
Maxillary denture displaced anteriorly and
superiorly
51. 51
Enlargement of tuberosities & Papillary
hyperplasia.
With posterior palatal seal negative pressure
produced posteriorly.
52. 52
• extrusion and flaring of mandibular anterior
teeth
• change in occlusal plane
53. 53
Resorption of maxillary anterior ridge
Gradual decrease of occlusal load posteriorly
and increased occlusal load anteriorly.
Loss of mandibular support
55. 55
Ellsworth Kelly (JPD 1972:27;140) :
3 yr study: all patients showed
a)1-3 mm loss of ridge height in maxillary anterior
region
b)1-2.5 mm increase in height of tuberosity
c)1-1.5 mm extrusion of lower anteriors.
56. 56
Kay Shen et al (JPD 1989;62:642-644)did a study in 150
complete denture wearers and found a prevalence of
symptoms of combination syndrome in 24% of patients
who had mandibular anterior teeth opposing complete
maxillary denture.This rate did not differ significantly
between patients who do and do not wear mandibular
RPD.
57. 57
Saunders et al (JPD 1979;41:126)
Changes associated with combination syndrome are
not
necessarily seen in all patients with maxillary complete
denture and mandibular distal extension RPD.
58. 58
Classification of combination syndrome
COMBINATIONSYNDROME:CLASSIFICATIONAND CASEREPORT Len Tolstunov:Journal of Oral ImplantologyVol.
XXXIII/No. Three/2007
62. Management
Avoiding extraction of lower anterior teeth and
retaining weak posterior teeth as abutments by
means of endodontic and periodontic technique
Over denture for retaining the roots of anterior
mandibular teeth
Commodious coverage of basal seat area
“shortened dental arch” concept.
62
63. Surgical options for flabby hyperplastic tissue ,
papillary hyperplasia
Correction of premaxillary bone atrophy with
bone grafting
Implants retained and implant supported
prostheses
63
64. 64
Saunders et al in 1979 stated that, the basic treatment
objectives in treating these patients is to develop an
occlusal scheme that discourages excessive occlusal
pressure in maxillary anterior regions in both centric
and eccentric positions
65. 65
specic objectives:-
• Mandibular R.P.D should provide positive
occlusal support ,have maximum coverage of
basal seat beneath distal extension bases.
• The design should be rigid and should
provide maximum stability while minimizing
excessive stress on remaining teeth.
• The occlusal scheme should be at a proper
vertical and centric relation position.
• Anterior teeth should be used for cosmetic
and phonetic purpose only.
• Posterior teeth should be in balanced
occlusion. Patient education and frequent
recall and maintainance care are essential
66. 66
Stephen M. Schmitt, 1985 described a treatment
approach that attempted to minimize the destructive
changes by using the treatment objectives of
Saunders et al.
Yair Langer et al described an approach in which
maxillary impression is made in a specially
designed tray using a combination of elastomeric
impression material and impression plaster without
distorting the anterior residual ridge.
67. 67
Type of teeth
Non anatomic teeth
Indications :Flat natural teeth
•Occlusal forces are transmitted vertically only.
•Donot provide balanced occlusion in lateral positions
•Free articulation is attainable
68. 68
Anatomic teeth
•Indication : If cuspal form of lower teeth retained
•Narrower than natural predecessor
•There should be a cusp tip to fossa relation.
•Molars should not be placed ore buccally – crossbite is
preferred