Tooth Transplantation in Dentistry

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Questions and Answers

What is tooth transplantation?

A surgical extraction of a tooth from one location to another location

A surgical movement of a tooth from one location to another location (correct)

A surgical implantation of a tooth from one location to another location

A non-surgical movement of a tooth from one location to another location

What is xenotransplantation?

Transplanting teeth from a donor tooth to a recipient site

Transplanting teeth from one site to another in the same individual

Transplanting teeth from one individual to another

Transplanting teeth from a different species to a human (correct)

What is an indication for tooth transplantation?

Unstable donor tooth

Inadequate bone support

Replacement of missing teeth (correct)

Severe periodontal disease

What is a contraindication for tooth transplantation?

Inadequate bone support Signup and view all the answers

What is autotransplantation?

Transplanting teeth from one site to another in the same individual Signup and view all the answers

What is allotransplantation?

Transplanting teeth from one individual to another Signup and view all the answers

What is the earliest reported case of tooth transplantation?

In ancient Egypt Signup and view all the answers

What is the current status of tooth autotransplantation?

It has a high success rate Signup and view all the answers

What is the ideal stage of root development for a donor tooth?

One-half to two-thirds root development Signup and view all the answers

What is the advantage of having an open apex in a transplanted tooth?

More chance of revascularization and reinnervation Signup and view all the answers

What is the survival rate of transplanted premolars with incomplete roots up to 13 years?

95% to 98% Signup and view all the answers

What is a common complication of tooth transplantation?

All of the above Signup and view all the answers

What is a possible cause of complications in tooth transplantation?

Inadequate vascularization Signup and view all the answers

What is an advantage of autotransplantation over other restorative methods?

All of the above Signup and view all the answers

What is the recommended time limit for extra-alveolar time during surgery?

30 minutes Signup and view all the answers

What is a complication that can occur due to inadequate gingival cuff closure?

All of the above Signup and view all the answers

Study Notes

Tooth Transplantation

Tooth transplantation is a surgical movement of a tooth from one location to another location in the same person (autotransplantation), different person (allotransplantation), or different species (xenotransplantation)

Types of Tooth Transplantation

Autotransplantation: surgical transplantation of a tooth from one site to another in the same individual
Allotransplantation: transferring a tooth from one individual to another of the same species
Xenotransplantation: transplanting teeth from a different species to a human

Indications and Contraindications

Indications: replacement of missing teeth, malpositioned teeth, orthodontic reasons, and developmental abnormalities
Contraindications: inadequate bone support, severe periodontal disease, unstable donor tooth, advanced age, and uncontrolled habits

Success Factors

Continued vitality of periodontal tissues
Donor teeth are premolars with one-half to two-third root development
Sustained minimal trauma and limited extraoral time during surgery
Stage of root development: open apex allows revascularization and reinnervation, while closed apex has a higher incidence of pulp necrosis and root resorption
95-98% survival rate of transplanted premolars with incomplete roots up to 13 years, and 82% for premolars with complete root formation up to 4 years

Complications and Management

Complications: rejection, infection, failure of integration, root resorption, pulpal necrosis, periodontal pocket formation, and alveolar bone loss
Possible causes: extra-alveolar time, trauma, infection, inadequate vascularization, improper positioning, inadequate gingival cuff closure, excessive force, and improper healing