Artificial dental implant ??... An Autogenic Transplantation
What is “A.D.T”? “Autogenic Dental Transplantation can be definedas, “the transplantation of a tooth from one position to another in the same indivdual.” Source-Dental Dictionary-Mosby
Where to do ??...• transplantation of impacted teeth to their normal position trans- alveolar transplantation)• agenesis of teeth (congenitally missing teeth ),• avulsion where the prognosis for successful re-implantation is poor,• untreatable root fractures.•journal of Oral Surgery Oral Medicine Oral Pathology: Vol 94, Number 6. December 2002. • other prosthetic reconstructions may cause delayed aesthetic or functional problems.
At the recipient site-Placement should be deep into the socketsoft tissues sutured around it. Photo illustration : journal of Oral Surgery Oral Medicine Oral Pathology: Vol 94, Number 6. December 2002.
Fixation should be flexible using resilient wires or by customizedorthodontic appliances.rigid fixations-contraindicated-they lead to ankylosis and resorption of the tooth.
Slagsvold andBjercke , in 1974 & 1978 respectively,documented a 100%success rate for 34 autogenic transplantations of premolars
Preoperative factors- Patient age stage of development the tooth. Peroperative factors- shape of the roots, surgical trauma relative dispensability storage after of tooth extraction of tooth
Teeth commonly used for Autotransplantation Premolars Third molars. Canine
Fully developed donor teeth, r oot canal treatment-initiated 2 weeks after transplantation. Donor tooth with incomplete root formation- p reservation of the apical Hertwigs epithelial root sheath to ensure p ulpal regeneration and r oot maturation and eruption. Ideally, D onor tooth should be of maximum length and having its potential for pulp regeneration A pex opening >1mm radiographically .
Comparison Of Auto Transplants with Dental Implants Auto Transplant Implant // Cost: low ……….HIGH // Donor dilemma no problem $$$ // Success rate: high high // Best age: 8- early 20s after 18 years // Orthodontically viable Excellent anchor unit // Susceptible to caries Excellent hygiene-needed // Prosthodontically complete Needs prosthesis // Osteogenic potential No Osteogenic potential
advantage ofTransplantation over ImplantationImplants will not grow and result in infraocclusion.Hertwig epithelial root sheath allows healing andregeneration of the pulpal tissue savingsubsequent root canal procedure.O steoinducing potential of theperiodontal ligament (PDL) cells-boneregeneration between gap of the walls of socket and the transplanted tooth.
CASE STUDY Title: Autotransplantation of a supernumerary incisor replacing a fused tooth: 24-month follow-up Tahsin Demir, DDS, PhD,a Ufuk Ates, DDS, PhD,b Burcak Cehreli, DDS, PhD,c and Zafer C. Cehreli, DDS, PhD,d Ankara, Turkey BASKENT UNIVERSITY
Extraction of both teethSupernumerary incisor auto transplanted into the extraction site of the fused incisor.