ABSTRACT
The zygomaticus dental implant, designed by NobelBiocare, was developed primarily for the treatment of the severely resorbed maxilla. Brånemark has reported an overall success rate of 97.6% with the placement of over 200 zygomatic implants during the period 1989 to 2001. There are well-defined characteristics within the patient's resorbed skeletal frame which guide the surgical placement of the zygomatic implant, thus determining whether the surgeon should use an implant with a 45 degrees or 55 degrees angulated head. This allows implant-supported restoration of the resorbed maxilla with a fixed cross arch prosthesis in the maxilla without a bone graft to the posterior maxilla. The use of a modified head angulation of 55 degrees, with implant placement as close to the crest of the edentulous ridge as possible, allows restorative clinicians to achieve an ideal restorative position in the posterior maxilla. The use of a zygomatic implant with a 55 degrees head reduces the buccal cantilever by 20%.
Subject(s)
Bone Resorption/surgery , Dental Implants , Jaw, Edentulous/rehabilitation , Maxilla/surgery , Zygoma/surgery , Bone Resorption/diagnostic imaging , Cephalometry , Dental Implantation, Endosseous/methods , Dental Prosthesis Design , Dental Prosthesis, Implant-Supported , Follow-Up Studies , Humans , Jaw, Edentulous/diagnostic imaging , Jaw, Edentulous/surgery , Maxilla/diagnostic imaging , Patient Care Planning , Radiography , Retrospective Studies , Surface Properties , Treatment OutcomeABSTRACT
Placement of implants in the anterior mandibular region is generally regarded as a routine, safe procedure. This case report describes an extensive haematoma in the floor of the mouth, following such a procedure, which rapidly became life-threatening, requiring an emergency tracheostomy to establish a surgical airway. The anatomic, radiographic and surgical aspects to the problem are discussed. Finally, when undertaking such procedures it is advisable to perform them reasonably close to a hospital where such a complication can be effectively and promptly handled by suitably trained persons.
Subject(s)
Dental Implantation, Endosseous/adverse effects , Hematoma/etiology , Oral Hemorrhage/etiology , Airway Obstruction/etiology , Airway Obstruction/therapy , Dental Implants, Single-Tooth/adverse effects , Hematoma/complications , Humans , Intubation, Intratracheal , Male , Mandible/blood supply , Mandible/surgery , Middle Aged , Mouth Floor/blood supply , Oral Hemorrhage/complications , Postoperative Hemorrhage/etiologyABSTRACT
An animal trial was undertaken in 9 vervet monkeys to test the effect of a medicament combination on extraction socket healing. All 4 third molar teeth were extracted and 2 of the sockets in each animal were packed with Gelfoam sponge impregnated with a medicament containing a local anaesthetic, antiseptic, 2 potent antifibrinolytic agents and metronidazole. The remaining 2 sockets acted as controls: one of the sockets was packed with Gelfoam sponge alone and the other allowed to heal spontaneously with no implant. The healing of these sockets was evaluated histometrically in 4-, 6- and 8-day specimens, and from the results it was concluded that sockets containing the medicament compound showed enhanced early socket healing.
