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Implants in orthodontics  /certified fixed orthodontic courses by Indian dental academy
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Implants in orthodontics /certified fixed orthodontic courses by Indian dental academy

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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

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Implants in orthodontics  /certified fixed orthodontic courses by Indian dental academy Implants in orthodontics /certified fixed orthodontic courses by Indian dental academy Presentation Transcript

  • IMPLANTS IN ORTHODONTICS www.indiandentalacademy.com
  • INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  •  Introduction  Classification of Implants  Material used for Implants  Osseointegration  Use of Implants in Orthodontics www.indiandentalacademy.com
  •  Linkow- Father of oral Implantology.  Implants are defined as alloplastic devices which are surgically inserted into or onto the jaw bone-Boucher. www.indiandentalacademy.com
  • Classification of Implants. Based on their location: Subperiosteal  Transosseous  Endosseous www.indiandentalacademy.com
  • Classification of Implants  According to their body geometry:- -Threaded or Non threaded -Porous or non porous www.indiandentalacademy.com
  • Materials used for Implants  In 16 &17th century –Ivory dental implants .  20th century-Metal Implant devices.  1940 &1960’s-CoCrMo subperiosteal & titanium blade implants. www.indiandentalacademy.com
  •  1970’s-Non metal biomaterials  1982-Branemark Implant. www.indiandentalacademy.com
  •  Stainless steel:-18% Cr & 8% Ni -surface passivation is required -subjected to crevice & pitting corrosion.  Cobalt-Chromium-Molybdenum Alloy :-used in fabrication of custom designs such as subperiosteal frames. www.indiandentalacademy.com
  •  Titanium:-exist in 3 forms -Alpha -Beta -Alpha-Beta phase (most commonly used). Ti-6Al-4V  Modulus of elasticity is equal to bone. www.indiandentalacademy.com
  •  Titanium:“Passivity”. • Metal with surface coatings Hydroxyapatite Tricalcium phosphate. www.indiandentalacademy.com
  •  Ceramics:Bioglass-contain oxides of Ca, Na, Si.  Polymers & Composites.  Other Implant Materials like Gold, Palladium, Tantalum, Platinum, Zirconium. www.indiandentalacademy.com
  • OSSEOINTEGRATION.  Term & concept of Osseointegration -Branemark. “An intimate structural contact at the implant surface and adjacent vital bone devoid of any intervening fibrous tissue.” www.indiandentalacademy.com
  • Evolution of the concept of osseointegration  Vital microscopic studies of the rabbit fibulatitanium chambered microscopes.  Series of experiments:-Titanium fixtures for immobilization of autologous bone grafts. - Tooth implants studies for healing & anchorage stability. www.indiandentalacademy.com
  •  Study done on dogs to find out the load bearing capacity of implants. Optical titanium chambers were implanted in humans-to assess the tissue reactions of titanium implants. www.indiandentalacademy.com
  • Biology of osseointegration. Hematoma Callus formation www.indiandentalacademy.com
  • Bone remodeling Fibrous tissue www.indiandentalacademy.com
  • Principles of osseointegration Factors important for reliable bone anchorage of an Implanted device. Implant biocompatibility:- www.indiandentalacademy.com
  • Principles of osseointegration.  Implant Design:- www.indiandentalacademy.com
  •  Implant surface:- www.indiandentalacademy.com
  •  State of the host bed:- www.indiandentalacademy.com
  •  Surgical technique:- www.indiandentalacademy.com
  •  Loading condition:- www.indiandentalacademy.com
  • Use of Implants in Orthodontics  Growth Studies.  Anchorage Orthodontic Orthopaedic -Maxillary protraction -Maxillary expansion -Space closure -Intrusion -Molar distalization www.indiandentalacademy.com
  • Growth Studies: Implants are the best means of reference points for studying the longitudinal growth studies. www.indiandentalacademy.com
  •  Growth Rotations -Bjork & skeiller .  Growth of Cleft lip & palate patients - Shaw . www.indiandentalacademy.com
  • ANCHORAGE: Orthopeadic correction- Two methods for obtaining the Skeletal anchorage: Intentionally Ankylosed teeth.  Endosseous Implants. www.indiandentalacademy.com
  •  Maxillary Expansion:- - Guyman(1980) www.indiandentalacademy.com
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  • Linkow-pioneer in the use of Implants in Orthodontics.  Pt’s with one or more missing teeth.  Loss of teeth during the course of orthodontic treatment.  Pt’s with CL-II malocclusion & missing lower posterior teeth.  Periodontally compromised teeth. www.indiandentalacademy.com
  • Anchorage for orthodontic purpose. Skeletal Anchorage :Creekmoore(1983) -Vitallium bone screw placed below the anterior nasal spine is used for intrusion of Upper anteriors. -6mm of upper incisor intrusion was seen after one year. www.indiandentalacademy.com
  • Endosseous Implants for maxillary protraction -Smalley etal (1988) • A traction force of 600gm is used and protraction was done till 8mm of anterior displacement of maxillary complex occurred. www.indiandentalacademy.com
  • Use of Endosseous Implant for closure of extraction site -Eugene Roberts (1989)  Endosseous Implants placed in the retromolar region are used to close the atrophic extraction site. www.indiandentalacademy.com
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  • Impacted Titanium Post for Anchorage -Frederic Bousquet etal(1996) www.indiandentalacademy.com
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  • Mini-Implant for Orthodontic Anchorage:-Ryuzo Kanomi(1997)  Mini-Implant is 1.2mm in diameter and 6mm in length. www.indiandentalacademy.com
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  • Mini-Implants for space closure. www.indiandentalacademy.com
  • Mini-Implants for molar intrusion www.indiandentalacademy.com
  • Skeletal Anchorage system for Open bite correction -Umemori , Sugawara etal (1999) • Control of vertical dimension is very important in correction of anterior open bite •‘L’ shaped titanium miniplates are used as a Source of anchorage for intruding the molars. www.indiandentalacademy.com
  •  Procedure for miniplate insertion:- www.indiandentalacademy.com
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  • Onplant & Ortho-Implant.  Onplant:-Block &Hoffman.  It is a flat disk shaped fixture available in 8 and 10mm in diameter  It has a HA coated surface for integration with the surrounding bone. www.indiandentalacademy.com
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  • Ortho-Implant - Celenza & Hochman •Similar to onplant but it is an endosseous Implant. •Its surface is sandblasted and etched to increase the adhesion to the surrounding bone www.indiandentalacademy.com
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  • Micro Implant  Dimension of micro implant are 1.2mm in diameter & 6mm in length. www.indiandentalacademy.com
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  • Micro-Implant for anchorage in Lingual orthodontics www.indiandentalacademy.com
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  • MAGNETS IN ORTHODONTICS www.indiandentalacademy.com
  •  Introduction  Types of magnetic materials  Properties of magnets  Application of magnets in orthodontics. www.indiandentalacademy.com
  •  In 1953, magnets were first used for denture retention by BEHRAN & EGAN.  Use of magnets in orthodontic- BLECHMAN & SMILEY. www.indiandentalacademy.com
  • PROPERTIES OF MAGNETS  Flux Density www.indiandentalacademy.com
  •  In dentistry, ferromagnetic materials with static field are used.  Magnetocrystalline Anisotropy.  Coercivity. www.indiandentalacademy.com
  •  Coulombs law:-This law states that force between two magnetic poles is directly proportional to magnitude & inversely proportional to square of the distance between them.  Curie point:-Pierre Curie(1859-1906) www.indiandentalacademy.com
  •  High force to volume ratio.  Maximal force at shorter distances. www.indiandentalacademy.com
  •  No interruption of magnetic force lines by intermediate media.  No friction in attractive force configuration.  No energy loss. www.indiandentalacademy.com
  • TYPES OF MAGNETIC MATERIALS       Platinum-cobalt(Pt-co) Aluminium-Nickel-Cobalt(Al-Ni-Co) Ferrite Chromium-cobalt-Iron Samarium Cobalt(SmCo) Neodymium-Iron-Boron(Nd2Fe B) 14 www.indiandentalacademy.com
  •  SAMARIUM-COBALT (SmCo5&Sm2Co17) MAGNETS:- -high resistance to demagnetization. -corrosion resistance. www.indiandentalacademy.com
  •  Advantages:-Continuous force is exerted. - Eliminates the patient co-operation. -No friction.  Disadvantages:-Tarnish &corrosion products are cytotoxic. -Cost factor www.indiandentalacademy.com
  •  Biological effect of magnetic forces:- Aronson:-thinning of epithelium under attracting & repelling magnets. McDonald - proliferative activity of fibroblasts in presence of static magnetic field Lars Bondemark & Kurol studied changes in human dental pulp and gingival tissue. www.indiandentalacademy.com
  • APPLICATIONS OF MAGNETIC APPLIANCES 1. 2. 3. 4. 5. 6. Tooth intrusion Expansion Tooth Impaction Space closure Molar distalization Magnetic Edgewise brackets 7. 8. Functional Appliances. Retainers. www.indiandentalacademy.com
  •  Tooth Intrusion:Active Vertical Corrector-Dellinger(1986) -Samarium cobalt magnets in the repelling mode are used. www.indiandentalacademy.com
  •  Fixed Magnetic Appliance:-introduced by VARUN KALRA & CHARLES BURSTONE. Appliance consists of an upper &lower acrylic splints with samarium cobalt magnets in stainless steel casting embedded in a repelling mode. www.indiandentalacademy.com
  •  EXPANSION:-Vardimon et al(1987) demonstrated palatal expansion using two types of magnetic devices in Macaca fascicularis monkeys. -Tooth borne appliance www.indiandentalacademy.com
  •  Tissue borne appliance (attached directly to palate by endosseous pins). www.indiandentalacademy.com
  •  Tooth Impaction:- Vardimon,Graber,Drescher -Neodymium Iron Boron magnets can be used to assist eruption of an impacted canine.  Mancini(1996)-force levels are sufficient enough to induce the cellular &biochemical changes are required to produce orthodontic tooth movement. www.indiandentalacademy.com
  • space closure -simple tooth movement without archwires :-Muller(1984) -Complex Intra &Interarch Mechanics:-Blechman(1985) CL-II mechanics with a magnetic force system in a CL-I extraction case www.indiandentalacademy.com
  • 3 magnet configuration to enhance CL-II mechanics 3 magnet configuration used to simultaneously move all 4 canines distally www.indiandentalacademy.com
  • CL-II mechanics using magnetic force system in CL-II extraction case. Repulsive CL-II mechanics in CL-II Nonextraction cases. www.indiandentalacademy.com
  •  Molar Distalization. -Gianelly et al(1989):-repelling magnets in conjuntion with a modified Nance appliance was used. -Bondemark & Kurol:-repelling samarium cobalt magnets were used for distalization. www.indiandentalacademy.com
  •  Magnetic Edgewise Brackets:-Kawata(1987) -Samarium cobalt magnet with an edgewise bracket (o.018slot) . www.indiandentalacademy.com
  •  Functional Orthopaedic Magnetic Appliances:Vardimon(1989) -for correction of CL-II&CL-III malocclusion. www.indiandentalacademy.com
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  •  Magnetic Twin Block:Clark(1996) -Samarium cobalt magnets were embedded in the inclined surface of the twin block in attractive mode. www.indiandentalacademy.com
  •  Magnetic Activator Device(MAD):-Darendilier (1993) developed this magnetically active functional appliance. MAD I-mandibular deviations MAD II-CLII malocclusion MADIII-CLIII malocclusion MADIV-skeletal open bite correction. MAD-II www.indiandentalacademy.com
  • MAD-II FOR CORRECTION OF CL-II,DIVISION 1 MALOCCLUSION. Deep Bite open Bite www.indiandentalacademy.com
  •  MAD III www.indiandentalacademy.com
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  •  MAD - IV www.indiandentalacademy.com
  • MAD IV(a) MAD IV( b) MAD IV( c) www.indiandentalacademy.com
  •  Treatment of CL-II bimax with magnetsDarendelier&Joho(199 2) -Autonomous fixed magnetic appliance. www.indiandentalacademy.com
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  •  Propellant Unilateral Magnetic Appliance (PUMA) - Chate(1995) Magnets are use to stimulate costo-chondral bone graft in Hemi facial microsomia. www.indiandentalacademy.com
  •  Retainers:-Springate & Sandler(1991) -micro magnets made of neodymium iron boron magnets as a fixed retainer in a patient with persistent diastema. www.indiandentalacademy.com
  •  Bibiliography:- -Dentofacial Orthopedics with functional appliances-T.M Graber, Rakosi,Petrovic. - www.indiandentalacademy.com
  • Thank you www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com