[Alveolar ridge augmentation by means of onlay grafts harvested from mandibular symphysis].
OBJECTIVE
Prosthestic-implant rehabilitation in subjects partially, or totally, endentulous is the method of choice for the considerable advantages involved from an aesthetic as well as functional point of view, besides preventing the physiological reabsorption that is established in the edentulous area. However, it is necessary to have an adequate quantity, as well as quality, of bone in order to support the fixture and the masticating load, conditions that up to now could often prove inferior for various reasons. Such a randomized research programme was proposed, in order to increase the bone volume by means of grafted onlays in the mandibular/chin area, with implant positioning 6 months after the operation, as a valid solution to the prosthestic problems found in the bone deficiency area.


METHODS
Twenty patients with partial edentulism in the incisor-canine area were chosen. They showed no signs of periodontal diseases, bruxism or parafunctions. They underwent an autogenesis bone graft with the bone being taken from the mandibular/chin area, with positioning of the implant 6 months after the first operation, thus obtaining an increased bone height of 5 to 7 mm.


RESULTS
Check ups were carried out in the 1(st) week after surgery, once a month for the first 3 months and then every 6 months and showed a minimal degree of bone reabsorption and an excellent osteo-integrative process.


CONCLUSIONS
The use of onlay autogenous bone, compared to the other methods for increasing bone volume, is a valid solution for prosthetic-implant rehabilitation in edentulous areas.
Pappalardo
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Cattedra di Clinica Odontostomatologica, Sezione di Odontostomatologia II, Dipartimento di Specialità Medico-Chirurgiche, Università degli Studi di Catania, Catania, Italy.
Baglio
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OA
Frasca
M
M
Grassi
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FR
D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000601:surgery*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000658:Amoxicillin / Q000627:therapeutic use; D001623:Betamethasone / Q000627:therapeutic use; D016025:Bone Transplantation; D002710:Chlorhexidine / Q000627:therapeutic use; D003481:Cuspid; D003758:Dental Implantation, Endosseous / Q000379:methods*; D005260:Female; D006801:Humans; D007180:Incisor; D007576:Jaw, Edentulous, Partially / Q000601:surgery*; D008297:Male; D008334:Mandible / Q000637:transplantation*; D008875:Middle Aged; D011859:Radiography; D014182:Transplantation, Autologous
D000658:Amoxicillin; D001623:Betamethasone; D002710:Chlorhexidine