Appropriate selection of the implant biomaterial is a key factor for long term success of implants. The biologic environment does not accept completely any material so to optimize biologic performance, implants should be selected to reduce the negative biologic response while maintaining adequate function.
types of materials in dental implants , includes a brief history of dental implants
also watch for more
https://youtu.be/aaJ6gpQohcs
https://youtu.be/REMKSUty0cE
https://youtu.be/fv3_tWZPJIU
https://youtu.be/GeZIbCwqKYU
if you want me to make ppt on some topic do let me know on the comment section of my youtube channel
in brief about dental implants materials. metalslike titanium stainless steel etc and non metals materials like ceramics peek materials and all the other advancerments in the field of implants described in brief
types of materials in dental implants , includes a brief history of dental implants
also watch for more
https://youtu.be/aaJ6gpQohcs
https://youtu.be/REMKSUty0cE
https://youtu.be/fv3_tWZPJIU
https://youtu.be/GeZIbCwqKYU
if you want me to make ppt on some topic do let me know on the comment section of my youtube channel
in brief about dental implants materials. metalslike titanium stainless steel etc and non metals materials like ceramics peek materials and all the other advancerments in the field of implants described in brief
There have been several changes since inception in the field of dental ceramics. Need for newer materials with improved aesthetics, flexural strength and optical properties made it necessary for introduction of advanced technology in fabrication of dental ceramics.
The biological fixation determines the longevity of dental implant treatment. It ensures the long term survival of dental implant. Better the osseointegration,higher will be the survival rate
Tooth loss from disease has always been a feature of mankind’s existence. For centuries people have attempted to replace missing teeth using implantation.
This presentation includes an introduction to implant osseointegration mechanism, various implant biomaterials, selection critria, and recent advances in the field of implant biomaterials.
History of biomaterials in dental implantology, various types of implant biomaterials, surface treatments of implants, guidelines for selecting implant biomaterial
There have been several changes since inception in the field of dental ceramics. Need for newer materials with improved aesthetics, flexural strength and optical properties made it necessary for introduction of advanced technology in fabrication of dental ceramics.
The biological fixation determines the longevity of dental implant treatment. It ensures the long term survival of dental implant. Better the osseointegration,higher will be the survival rate
Tooth loss from disease has always been a feature of mankind’s existence. For centuries people have attempted to replace missing teeth using implantation.
This presentation includes an introduction to implant osseointegration mechanism, various implant biomaterials, selection critria, and recent advances in the field of implant biomaterials.
History of biomaterials in dental implantology, various types of implant biomaterials, surface treatments of implants, guidelines for selecting implant biomaterial
animated presentation for easy apporoach towards dental implants.. download the ppt and open in slideshow to see alll the animations and GIF's.. includes basics about about types, composition parts procedure biointegration aantages and improvents of implants. comparision between normal tooth and an implant.
A prosthetic device or alloplastic material
implanted into oral tissues beneath the mucosal
or periosteal tissues and/or within the bone to provide retention and support for fixed or removal prosthesis.
A broad idea about Esthetic Crown objectives and their Indications along side with the drawbacks of SSC also the Classification of esthetic crowns plus the Pros and cons of each esthetic crown.
Implants in orthodontics / /certified fixed orthodontic courses by Indian den...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
A dental implant (also known as an endosseous implant or fixture) is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor. The basis for modern dental implants is a biologic process called osseointegration, in which materials such as titanium form an intimate bond to bone. The implant fixture is first placed so that it is likely to osseointegrate, then a dental prosthetic is added. A variable amount of healing time is required for osseointegration before either the dental prosthetic (a tooth, bridge or denture) is attached to the implant or an abutment is placed which will hold a dental prosthetic.
Success or failure of implants depends on the health of the person receiving the treatment, drugs which affect the chances of osseointegration, and the health of the tissues in the mouth. The amount of stress that will be put on the implant and fixture during normal function is also evaluated. Planning the position and number of implants is key to the long-term health of the prosthetic since biomechanical forces created during chewing can be significant. The position of implants is determined by the position and angle of adjacent teeth, by lab simulations or by using computed tomography with CAD/CAM simulations and surgical guides called stents. The prerequisites for long-term success of osseointegrated dental implants are healthy bone and gingiva. Since both can atrophy after tooth extraction, pre-prosthetic procedures such as sinus lifts or gingival grafts are sometimes required to recreate ideal bone and gingiva.
The final prosthetic can be either fixed, where a person cannot remove the denture or teeth from their mouth, or removable, where they can remove the prosthetic. In each case an abutment is attached to the implant fixture. Where the prosthetic is fixed, the crown, bridge or denture is fixed to the abutment either with lag screws or with dental cement. Where the prosthetic is removable, a corresponding adapter is placed in the prosthetic so that the two pieces can be secured together
Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
ABDOMINAL TRAUMA in pediatrics part one.drhasanrajab
Abdominal trauma in pediatrics refers to injuries or damage to the abdominal organs in children. It can occur due to various causes such as falls, motor vehicle accidents, sports-related injuries, and physical abuse. Children are more vulnerable to abdominal trauma due to their unique anatomical and physiological characteristics. Signs and symptoms include abdominal pain, tenderness, distension, vomiting, and signs of shock. Diagnosis involves physical examination, imaging studies, and laboratory tests. Management depends on the severity and may involve conservative treatment or surgical intervention. Prevention is crucial in reducing the incidence of abdominal trauma in children.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Here is the updated list of Top Best Ayurvedic medicine for Gas and Indigestion and those are Gas-O-Go Syp for Dyspepsia | Lavizyme Syrup for Acidity | Yumzyme Hepatoprotective Capsules etc
4. • Replacement of missing
teeth has always posed
a challenge to the
dentist in terms of
esthetics and successful
functioning of
masticatory loading.
CreatingSmiles
5. • With fixed replacements,
the disadvantages of
reduction of abutment
teeth and resulting
sensitivity discourage the
patient the treatment
option.
CreatingSmiles
6. • Caries risk at the crown-
tooth margin, increased
patient effort to maintain
oral hygiene, and alveolar
bone loss in pontic area
are other disadvantages.
• Removable prostheses
are unesthetic and
functionally poor.
CreatingSmiles
7. • Dental implants has
revolutionized the replacement
of missing natural teeth.
• Concept of osseointegration
was introduced by Per-Ingvar
Brånemark in 1952.
CreatingSmiles
8. History
• In 1931, an excavated
mandible of a woman
belonging to the Mayan age
contained three tooth shaped
pieces of shell placed into
the sockets.
• Dr. Leonard Linkow, the
father of modern implant
dentistry, placed first dental
implant in 1952.
CreatingSmiles
9. Osseointegration
• Depends on the composition and
surface characteristics of the
implant.
• Also called functional ankylosis, is
a process by which an implant
unites with the surrounding bone.
• The blood clot formed after implant
placement is replaced by organized
granulation tissue and further by
woven bone which finally converts
into mature bone.
CreatingSmiles
10. Branemark stated that for osseointegration to
occur an implant should have the following
qualities:
• It should be made of a highly biocompatible
material such as titanium.
• It should be sterile.
• It should be inserted by an atraumatic surgical
technique.
• It should have primary stability (minimum
torque during initial placement 35Ncm).
CreatingSmiles
11. • It should have adequate loading
during the healing period.
• It should have surface
configurations that cause
osteophilic attraction.
• It should have two parts- one
which favors
bioadhesion(osseointegration)
and another which favors
nonadhesion (collar area above
bone) –for efficient plaque
control.
CreatingSmiles
13. Abutment
• It is that part of the implant which supports the
crown and provides retention to it.
• It resembles a prepared tooth and is attached to
the body of the implant.
CreatingSmiles
14. Implant body/fixture
• It is placed in the bone
during implant surgery and
provides anchor to the
restoration.
• It is fixed onto the bone
and the abutment is
screwed onto it.
CreatingSmiles
15. Cover screw
• It is placed over the
implant body after the first
stage of surgery to
facilitate suturing of the
tissues and prevent growth
of tissues over the edge of
the implant.
CreatingSmiles
16. Healing cap
• They are placed over the
implant body and protrude
outside the tissues into the oral
cavity.
• They maintain the tissue
contour around the implants
and also help in permanent
restoration of the implant.
CreatingSmiles
18. Advantages
• Implants avoid cutting down of neighboring
natural teeth.
• They help preserve bone and reduce bone
resorption.
CreatingSmiles
19. • They reduce the load on
the remaining natural
teeth as they offer
individual support.
• Improved efficiency in
chewing and speaking
compared to complete
denture.
CreatingSmiles
20. Disadvantages
• Involve a surgical procedure.
• Waiting period of 3-4 months to enable healing
before prosthesis.
• Increased cost compared to conventional
treatment.
CreatingSmiles
21. Indications
• Loss of one or more natural teeth, especially
when most of the posterior teeth serving as
occlusal stops are missing.
• Presence of a good quality and quantity of
bone around the edentulous area.
• Patient unwilling to undergo a reduction of the
natural teeth.
• Providing support for overdentures.
• Implant-supported maxillofacial prosthesis.
CreatingSmiles
22. Contraindications
• Inferior quality of bone in edentulous area.
• Bruxism
• Steroid therapy
• Bleeding disorders
• Immunodeficient coditions
• Proximity to anatomical structures such as the
inferior alveolar nerve or maxillary sinus.
CreatingSmiles
24. Based on material used
• Metals and alloys: titanium and its alloys,
stainless steel, cobalt chromium, and
molybdenum
• Ceramics and carbon implants: made of
carbon with stainless steel
• Polymers and composites:
Polymethylmethacrylate and
polytetrafluoroethylene
CreatingSmiles
25. Based on biological response
• Biotolerant: these materials are not easily
rejected when implanted into living tissue but
are surrounded by a fibrous layer. E.g.
• Metals like gold, Co-Cr alloy, stainless steel,
zirconium, nobium
• Polymers like polyethylene, polyamide,
polymethylmerthacrylate, polyurethane
CreatingSmiles
26. • Bioinert: these materials allow close
apposition of bone on their surface, leading to
contact osteogenesis. E.g.
• Metals like commercially pure titanium (Cp-
Ti) and titanium alloy
• Ceramics like aluminum oxide and zirconium
oxide
CreatingSmiles
27. • Bioactive: these materials allow the formation
of bone onto their surface, but ion exchange
with host tissue leads to the formation of a
chemical bond along along the interface. E.g.
• Ceramics like HA, tricalcium phosphate,
bioglass, fluorapatite, and carbon-silicon.
CreatingSmiles
29. Based on implant design
A. Endosteal implants: are
placed into the alveolar
and/or basal bone and
transect only one cortical
plate.
• E.g. Blade implants and
ramus frame implants.
• All implants placed within
the bone are endosteal
implants.
CreatingSmiles
30. B. Subperiosteal implants:
consists of an implant
substructure that is
custom cast frame placed
directly over the bony
cortex just below the
periosteum.
CreatingSmiles
35. Titanium and its alloys
A. Commercially pure titanium(Cp-Ti)
• Titamium is divided into four grades based on
iron content (0.2%-0.5%)
Grade 1: O2[0.8%], Fe[0.2%]
Grade 4: O2[0.4%], Fe[0.5%]
• Microstructure
Hexagonal close-packed(alpha phase)
Cubic body-centered(beta phase)
CreatingSmiles
36. • Properties: Titanium exhibits the properties of
passivation (rendering a substance inactive or
inert by chemical action) upon contact with air
or tissue fluids, which minimizes biocorrosion.
• Nearly always covered by titanium
oxide(TiO2) layer which is biologically inert
osseointegration.
• It has thickness of 2-10 nm.
CreatingSmiles
37. • Modulus of elasticity is 5 times
greater(104GPa) than compact bone.
• Titanium is lightweight and has a density of
4.51g/cm.
• It has a melting point of 1668°C
CreatingSmiles
38. B. Titanium-6 Aluminum-4 Vanadium(Ti-6Al-
4Va)
• Composition:
90% titanium
6% aluminum
4% vanadium
• Modulus of elasticity of this alloy is 5-6
times(113GPa) that of compact bone.
CreatingSmiles
39. Iron-Chromium-Nickel-Based Alloys:
Stainless Steel
• Composition
70% iron(main constituent)
18% chromium(corrosion resistance)
8% nickel(stabilizes the austenitic structure)
• High strength and ductility.
CreatingSmiles
40. Advantages
• Corrosion resistance
• Increased ductility
Disadvantages
• Vulnerable to crevice and pitting corrosion
• Contraindicated in patients allergic to nickel
CreatingSmiles
42. Ceramics
• Are inorganic, non metallic,
and non polymeric materials
that are either bioactive or
bioinert.
• Ceramic implants are
manufactured by compaction
and sintering at elevated
temperatures.
CreatingSmiles
43. Bioinert ceramics
• Used in root form,
endosteal, plate form,
and pin type dental
implants.
CreatingSmiles
44. • Advantages
Do not exhibit thermal and
electrical conductivity.
Undergo minimal
biodegradation.
Reactions with bone are
favorable.
CreatingSmiles
45. • Disadvantages
Cannot be autoclaved, since it results in decrease
in strength.
Scratches or notches present on the implant
surface may act as fracture initiation sites and
result in failure of the implant.
CreatingSmiles
46. Bioactive ceramics
• Are applied to titanium and cobalt alloy substrates
by plasma spraying.
• Plasma spraying provide a roughened,
biologically acceptable surface for bone growth
and ensure anchorage in jaw.
• The particles are small sized crystalline HA
ceramics.
• Average thickness between 50um and 70 um and
are mixtures of amorphous and crystalline phases.
CreatingSmiles
47. • Advantages
Minimal thermal and electrical conductivity
Minimal biodegradation
Minimal reactions with bone
• Disadvantages
Fractures can be initiated by scratches or notches
present on the implant surface.
A decrease in strength occurs when steam sterilized.
Residues of the chemical solutions used are found.
CreatingSmiles
48. Bioglass
Mechanism of action
• Change in pH near the bioglass
surface causes sodium, calcium,
and phosphorus ions to get
dissolved.
• Hydrogen ions in the local tissue
replace the lost sodium ions in
the bioglass.
• At the surface, a silica-rich gel
forms because of the selective
dissolution of elements.
CreatingSmiles
49. • Ca and P ions migrate to the silica gel surface,
from within both bioglass and tissue fluids,
when silica is lost.
• Osteoblasts proliferate, producing collagen
fibrils, as sufficient concentration of
phosphorus is present at the surface.
• Collagen fibrils develop and get incorporated
in the Ca and P gel.
CreatingSmiles
50. Advantages
• Similar to normal biological tissue
• Excellent biocompatibility
• Minimal thermal and electrical conductivity
• Modulus of elasticity similar to bone
Disadvantages
• Low mechanical, tensile, and shear strengths
under loading
• Low attachment between coating and substrate
• Variable solubility
CreatingSmiles
51. Polymers
• Used for manufacturing the superstructure
• They act as shock absorbers to load
bearing implants
Advantages
• Excellent biocompatibility
• Properties can be altered to suit clinical
implication
Disadvantages
• Inferior mechanical properties
• Lack of adhesion to living tissues
• Adverse immunological reactions
• Cannot be sterilized by steam or ethylene
oxide
CreatingSmiles
52. PEEK (poly-aryl-ether-ketone)
Dental Implants
• PEEK is a semi-crystalline linear
polycyclic thermoplastic
• applied as an implant material in
the implant body, abutment, and
superstructure.
• fewer hypersensitive and allergic
reactions.
• It does not have a metallic color;
it is beige with a touch of gray,
and has a more aesthetic
appearance than Ti
CreatingSmiles
53. Surface characteristics of an implant
• Dental implant surfaces should stimulate bone
growth around them upon placement
• The surface topography of an implant is
variably modified with surface treatment and
coatings in order to promote predictive
osseointegration
CreatingSmiles
54. Units of importance
• Sa: Value represents the mean height of peaks
and pits of the surface
• Sdr: is the developed surface area as compared
to a perfect flat area
CreatingSmiles
55. Surface characteristics of implants
are classified based on the following:
1. Roughness
a. Smooth: < 0.5 um
b. Rough: 0.5-3 um
i. Minimally rough: 0.5-1 um
ii. Intermediately rough: 1-2 um
iii. Rough: 2-3 um
2. Texture
a. Concave: By additive treatments like HA coating and
titanium plasma spraying
b. Convex: By substractive treatments like etching and
blasting
CreatingSmiles
56. Roughness
• Roughness increases the surface area
• Improves cell attachment and biochemical
interaction with the bone
Methods to increase surface roughness:
a) Machining:
• Implants with grooves on the thread are more
stable
• Surface oxides consists of a 2-10 um thick,
mostly amorphous layer of TiO2
CreatingSmiles
57. b) Acid etching:
• Implant surface is pitted.
• Hydrochloric acid(HCL), sulfuric
acid(H2SO4), and nitric
acid(HNO3) are used
• Results in a minimally rough
surface with sa values 0.3-1 um
• Advantages: Increased attraction of
osteoblasts to the implant surface
occurs due to a microscopic
increase in the surface area
CreatingSmiles
58. c) Sandblasting/grit blasting
• Particles of aluminum trioxide and titanium
dioxide are used
• Allows adhesion, proliferation, and
differentiation of osteoblasts.
• Sa values are 0.5-2 um
d) Sandblasted and acid-etched(SLA) surface
• Dental implants are first sandblasted and then
etched.
• Sa values 1-2 um
• Advantages: Healing, osseointegration, and
stability of implants are achieved in 6 weeks
with SLActive as against the usual 12 weeks.
CreatingSmiles
59. e) Anodized surfaces
• Anodic oxidation of a titanium
implant surface results in a partial
crystalline and phosphate-enriched
microstructured surface.
• Results in improved bone ingrowth
due to mechanical interlocking
• Advantages: Higher clinical
success rate.
Bone-implant contact ratio is high.
CreatingSmiles
60. f) Titanium spraying
• Titanium plasma-sprayed(TPS) screw implant
is a self-tapping titanium screw with a
titanium plasma-flame-sprayed surface.
• There is a six-fold increase in the surface area
of the implant-bone interface improve
retention.
CreatingSmiles
61. g) Porous sintering
• Refers to incorporation of porosity on the
implant by sintering of the metal powder.
• Pores give an increased retention due to
increased ingrowth of surrounding bone into
the pores.
• Laser-sintered metals have been developed to
improve long-term performance.
CreatingSmiles
62. h) Hydroxyapatite plasma
spraying
• Most frequently used method
for deposition of calcium
phosphate coatings on
implant surface.
• Improve the bioactivity.
• Surface area of the implant
increases upto aprox. 6 times
the original surface area.
• Ra value 5.0±1um
CreatingSmiles
63. Recent advances in surface coatings
• ZiUnite: metal free ceramic; it has porous
surface based on zirconia
• Bioactive glass coated: bioactive silicate glass
particles are sprayed over the implants by
enameling procedure.
• Protein coated: recombinant human bone
morphogenic protein(rhBMP) is coated over
dental implants.
CreatingSmiles
64. Latest developments
• Corundum blasting: it creates deep pits in the
implant surface that can act as retentive
pockets for new bone.
• PVD coating: physical vapor deposition
coatings such as titanium nitride or zirconium
nitride are applied for cosmetic reasons on
dental implant collars and abutments for wear
protection.
CreatingSmiles
66. Nanotechnology in implants
• Addition of nanoscale calcium
phosphate crystals to the implant
surface increases the complexity
of the surface and improves
healing by causing a surface
change.
• Nanostructured surfaces control
the differentiation pathways into
specific cell lineages and
ultimately direct the nature of
peri-implant tissues.
CreatingSmiles
67. Conclusion
Various implant materials alter the response of
the surrounding tissue to its placement,
namely, osseointegration. More importantly,
the surface characteristics of an implant
determine the predictibility and success of
osseointegration. With recent advances in
implant biomaterials and surface
characteristics, the cellular and tissue response
to the implants can be altered to improve
osseointegration.
CreatingSmiles
68. References
• Philips’ Science of Dental Materials, 11th ed.
• S. Mahalaxmi Materials Used in Dentistry, 1st
ed.
• John J Manappallil Basic Dental Materials, 4th
ed.
• Andreas Schwitalla, Wolf-Dieter Müller,
PEEK Dental Implants: A Review of the
Literature, Journal of Oral Implantology.
2013;39(6):743-749.