الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Background: Lateral alveolar ridge augmentation is a necessary procedure prior to or in conjugation with implant placement when the dimensions of the alveolar process prevent implant placement in a prosthetically ideal position. Many treatment modalities have been proposed by authors over the years. Autogenous bone block grafts are regarded as gold standard for lateral alveolar ridge augmentation. However, the introduction of tooth root block grafts offer an ideal alternative to autogenous bone block grafts. Objectives: To compare between autogenous tooth roots (TR) and autogenous bone blocks grafts (AB) for maxillary lateral alveolar ridge augmentation. Material and Methods: A total of 14 patients in need of maxillary lateral ridge augmentation for future implant therapy were allocated to parallel groups receiving either (a) healthy autogenous tooth roots (e.g., retained wisdom or impacted teeth) (n = 7) or (b) cortical autogenous bone blocks harvested from the chin area. Patients were evaluated Clinically as for graft thickness immediately after augmentation and radiographically as for bone gain and graft resorption after six months. Results: Soft tissue healing was uneventful in both groups. Clinically graft thickness immediately after augmentation was comparable in both groups and amounted to 2.88ﾱ0.24 mm in the AB group and 2.62ﾱ0.572 mm in the TR group, Mean GT values were not significantly different between both groups (p=0.376). Six months after augmentation, patients were evaluated radiographically for bone gain and resorption, mean bone gain amounted to 25.44ﾱ5.38 mm2 in AB group and 38.70ﾱ7.69 mm2 in TR group while mean graft resorption amounted to 24.98ﾱ12.08 mm2 in AB group and 12.80ﾱ0.45 mm2 in TR group. The resulting differences between both groups were statistically significant for both mean bone gain and graft resorption (p=0.03* and p=0.05*). Conclusions: Tooth root block grafts are associated with higher bone gain than autogenous bone block grafts so they may serve as an alternative graft to support lateral alveolar ridge augmentation and two-stage implant placement.