IM0110

06 I I case report _ sinus elevation Fig. 1_Diagram of implant insertion in the maxilla. a_Conventional straight vertical position b_Mesio-distal angulations of the im- plants permitting longer implants posterior as well as better distal sup- port of the denture. Fig. 2_Sagittal cross-section recon- structed perpendicular to the alveolar crest. From the 4-mm level (1), the distance to the bottom of the maxil- lary sinus and the nasal cavity (2) can be determined. Fig. 3_Presurgical radiography. implants1_2010 _Maxillary sinus elevation and bone augmen- tation are acceptable techniques that may provide sufficient bone quantity and quality for implant supportintheposterioratrophicmaxilla(WallaceSS et al. 2003). Yet, given the morbidity risk plus cost andtimeconsumingeffects,thesetechniquesareto be reconsidered. Simpler and safer protocols are therefore required for the posterior maxilla where bone resorption, deficient posterior alveolar ridge, andincreasedpneumatisationofthesinusallresult in a minimal hard tissue bed thus render implant placement difficult (Frank R et al. 2005). Part I of this publication reported about the aim of the master thesis and materials and methods. Part II follows up with the surgical techniques, dis- cussionandconclusionsavoidingasinusliftproce- dure. _Surgical techniques Tilted implants The standard procedure is to install the implant, totally covered with bone, in a vertical position. This requires the bone volume in the maxillary alveolar crest to be at least 10 mm vertically and 4 mm hori- zontally. The success rates of implant treatments as per such procedure are 95 to 99% (Triplett RG et al. 2000). In case of less bone volume, bone grafting is oneofseveralprocedurestoreachtherequiredbone volume. An alternative, however, was presented for severelyresorbedalveolarcrest(ClIV,V)inwhichim- Safe and effective alterna- tives to sinus elevation in the atrophic posterior maxilla Part II—A master thesis Author_Dr Adel A Chidiac, Kuwait Fig. 4a Fig. 4b Fig. 5 Fig. 2 Fig. 3Fig. 1 a b

Please activate JavaScript!
Please install Adobe Flash Player, click here for download