current dental implant systms new
TRANSCRIPT
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CURRENT DENTAL IMPLANT SYSTEMS
DR.K.V.PRATHEEP
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CONTENTS
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DENTAL IMPLANT SYSTEM
• Dental implant components that are designed to mate together. An implant system can represent a specific concept, inventor, or patent. It consists of the necessary parts and instruments to complete the implant placement and abutment components.(ISO 10451)
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Classification of implant systems
Based on placement with in the tissues:• Endosteal: -root forms -plate or blade forms -endodontic stabilizers• Sub periosteal• Transosteal • Epithelial
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• Pin concept
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Ramus frame
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Root form implants
• Screw• Cylinder
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Screw vs cylinder
(schimitz et al1991)
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• Straight• Tapered• Conical• Ovoid• Trapezoidal• stepped
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Implant abutment connections
External hex Internal hex Morse taper
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External hex
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Internal hex
• more natural appearance to the prosthetic tooth.
• this type of dental implant connection is considered more stable, eliminating or reducing stress on the cold weld as well as any potential for rotation to occur.
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Morse taper
• A Morse taper creates a friction fit between the two parts resistant to much higher loosening torque than that found with traditional hexed mating surfaces.
• The micro-gap is much narrower between the two parts having a Morse taper.
• eliminates any lateral movement between the mating surfaces unlike the micro-movement found with hexagonal mating surfaces.
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Praful narang et al 2011
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Surface topography
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Dental implant materials
metals
ceramics
CP Titanium and Ti-6Al-4v alloys
Cobalt alloys
Inert ceramics
Bioactive ceramics
alumina
Carbon
Zirconia
Bioactive glasses and ceramics
Calcium phosphates
Materials used for dental implants
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Design characteristics of dental implants associated with clinical success
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Important clinical outcomes
• Ease of placement.• Osseointegeration.• Aesthetics.• Marginal bone loss.• Mechanical problems of implant/abutment or
super structure connection.• Mechanical failure of oimplant.
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Ease of placement
• Geometry of the implant.• Friberg et al compared the early behaviour of a
Brånemark system modified prototype MkIV implant with that of the standard implants in regions of mainly of type 4 bone in 44 patients.
• The patients were treated with implants for 39 maxillas and 5 mandibles and these were followed up for 1 year.
• The MkIV implants more frequently required a higher insertion torque and showed a significantly higher primary stability than the control implant.
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Osseointegeration
• Implant body geometry• Implant material• Implant surface topography
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Smith et al 2001
• Two different surface treatments of ZL-Duraplant implants in 137 patients were evaluated in a trial over 2 to 6 years.
• Two implant geometries were used, thus creating study groups consisting of surface treated cylinders (n = 30), and screws with (n = 339) and without (n = 58) surface treatments.
• Similar performance was first noted to begin with, but the cylinders demonstrated poorer results than the screws after approximately 1 year.
• Surface treated implants performed better
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Esthetics
• Implant and abutment interface geometry• Abutment material and geometry
Jokstad et al (2004)
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Marginal bone loss
• Implant body geometry• Implant material• Implant surface topography• Implant and abutment interface geometry• Abutment material, geometry and surface
topography
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• Advantages of Platform switching:
• Reducing bone loss increases the bone-implant contact surface
• Enhanced osseointegrated area
• Helps retain peri-implant crestal bone
• Determines gingival aesthetics and the health of the implant-supported restorations
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Hi tec
• Internal hex implants: -tapered self thread implants. (3.3,3.75,4.2,5mm). (8,10,11.5,13,16mm)
-smooth fit cylindrical implants. (3.50,3mm),(8,10,13,16mm)
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Surface treatment
• Tapered self thread implants: - Acid etched or large grit sand blasted and acid etched.• Smooth fit cylindrical implant: -titanium plasma sprayed or HA coated.
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• External hex implants:-3.75mm(8,10,11.5,13,16),-4.2mm(6,8,10,11.5,13,16)mm-5mm (6,8,10,11.5,13,16)mm.
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External hex cylinder implant
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Noble biocare
External hex connection:• Brånemark System Mk III• Brånemark System Mk IV• NobelSpeedy Groovy• Brånemark System Zygoma
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Branemark System MK III Groovy-(narrow,regular and wide platform)
• Implant Apical Features: grooved • Implant Apical Shape : flat apex • Implant Body Features : threaded • Implant Body Shape : cylinder • Implant Body Surface : TPO (Titanium Porous Oxide) anodic
oxidation • Implant Body Thread : V-shaped • Implant Cervical Features: unpolished surface • Implant Cervical Shape : wider than body • Implant Material : commercially pure titanium (grade 4) • Platform to Abutment Connection: external hex
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Branemark System MK III-Shorty
• Implant Body Thread: V Shape.• Platform to Abutment Connection: External
Hexagon. • Hexagon Diameter: 2.7mm. • Hexagon Height: 0.7mm. • Sizes: Platform diameter:4.1mm.
Implant diameter:3.75mm,4.0mm. Implant Length:5.5mm,7.0mm.
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• Implants with internal conical connection:-Noble active
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• Implants with internal tri-channel connection:-Nobel Replace Tapered-Replace Select Tapered-Nobel Replace Straight-Replace Select Straight-Nobel Speedy Replace-Replace Select TC
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• Branemark system:very effective in medium to dense bone.
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• NobelSpeedy:-more tapered towards the apex.-allows for under preparation.-Good primary stability.-used in all on 4 concept.
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Alpha bio implant system
• Ti-6A-4V titanium alloy implants.• Nano tech implant surface.• Sand blasting and acid etched.
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• Advantages of nanotech implant surface:-increased early BIC.-increased primary and secondary stability.-shortened healing period.-higher predictability.-increased rate of osteointegeration.
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• Screw internal hex implant system.• Arrow press implant system.• Arrow implant system.(provisional)
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• Screw internal hex implants:-spiral implants
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• Achieves very high primary stability.• Ideal for immediate implantation.• Ideal for immediate loading.• Ideal for bone types III and IV.• One platform for all diameters.
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• Dual fit implants
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• Arrow press implants: single piece with integerated trans gingival abutment.
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Osstem dental implant system
• GS system.• SS system.• US system.• MS system.
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• GS system:-submerged type.-internal hex connection.-dual thread for optimal stress distribution.-oxidized treated cell nest surface.-for immediate extraction.
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• SS system:-non submerged type.-internal octa and morse tapper type ofConnection.
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• US system:-sumerged.-External hex.-RBM surface treatment.
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MS system
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Zimmer one piece implant
• Implant Apical Features : oblong hole • Implant Apical Shape : domed apex • Implant Body Features : threaded • Implant Body Shape : tapered • Implant Body Surface : blasted with hydroxylapatite • Implant Body Thread : V-shaped • Implant Cervical Features: polished surface • Implant Cervical Shape: straight transition from body • Platform to Abutment Connection: one piece (no
connection)
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• Implant Cervical Features: 0.5mm height Machined.• Implant Body Thread: Implant Diameter 3.0mm:Triple-
Lead Thread. 1.2mm pitch. Implant Diameter: 3.7mm,4.7mm: Double-Lead Thread. 1.2mm pitch.
• Sizes:Implant Diameter 3.0mm. Abutment Emergence Profile: 3.5mm. Implant Length: 10.0mm,11.5mm,13.0mm.
• Implant Diameter 3.7mm. Abutment Emergence Profile: 4.5mm. Implant Length: 10.0mm,11.5mm,13.0mm,16.0mm.
• Implant Diameter 4.7mm. Abutment Emergence Profile: 5.5mm. Implant Length: 10.0mm,11.5mm,13.0mm.
• Zimmer One-Piece Implant-17deg.: 17 deg. Abutment
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Tapered Screw Vent
• Implant Apical Features : oblong hole • Implant Apical Shape : domed apex • Implant Body Features : threaded • Implant Body Shape : tapered • Implant Body Surface : HA (hydroxyapatite)
blasted with hydroxylapatite • Implant Body Thread : V-shaped • Implant Cervical Features: polished surface • Implant Cervical Shape : narrow • Platform to Abutment Connection: internal hex
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Spline twist implant
• external spline type of connection.