Category Archives: Preprosthetic Surgery

Sinus lift

Sinus lift Rehabilitation ‘of the maxilla lising implants is frequently problematic because of the extension of thcmaxlllarv sinus into the alveolar ridge area. In many cases the actual size and configuration of the maxilla are satisfactory in terms of height and width of the alveolar ridge area. However, extension of the maxillary sinuses into the alveolar ridge may prevent placement oi implants in the

Maxillary Hydroxyapatite Augmentation

Maxillary Hydroxyapatite Augmentation HA is readily  eliminates the need for donor-site’ ~lIrgery, and is castly placed in an outpatient setting. H:\ can be used to contour and eliminate minor ridge migration and undercut areas in the maxilla.I\:\ is pla ced into the maxilla in ” tet lmique similar tothat described for mandibular augrncntati, In. In the maxilla”single midline incision is unvu

Interpositional Bone Grafts

Interpositional Bone Grafts Maxillary interpositional bone grafting maintains the blood supply to the repositioned portion of the maxilla and generally results in more predictability with less extensive resorption postoperatively. Interpositional bone grafting in the maxilla is indicated in the bone-deficient maxilla, where the palatal vault is found to be adequately formed b ut ridge height is insufficient t

Onlay Bone Grafting

Onlay Bone Grafting autogenous rib was first described by Terry, Albright, and Baker.U Maxillary onlay bone grafttng is indicated primarily when severe resorption of the maxillary alveolus is seen that results in the absence of a clinical alveolar ridge and loss of adequate palatal vault fmlll.22 Maxillary onlay grafting currently -is usually accomplrshed using corticocancellous blocks of iliac crest bone.- 


MAXILLARY AUGMENTION Severe resorption of the maxillary alveolar ridge is  not “as common as mandibular resorption. hen moderate-to-severe maxillary resorption docs occur, the denture-bearing area of the maxilla may allow prosthetic rehabilitation without bony augmentation. In certain cases a severe increase in lnterarch space, loss of patata] vault, interference from the zygomatic buttressarea, and abs

Guided Bone Regeneration (Osteopromotion)

Guided Bone Regeneration (Osteopromotion)  In guided bone regeneration, a membrane (nonresorbable or resorbable) is used to cover an area where bone graft healing or bone regeneration is desired. The concept c’: guided regeneration, or osteo rornotion, is based o , the ability to exclude undesirable cell types, such a’ epithelial cells or fibroblasts, from the area where bone healing is taking pla

Hydroxyapatite Augmentation of the Mandible

Hydroxyapatite Augmentation of the Mandible The problems associated with bone grafting, including resorption, donor-site morbidity, and the need for hospitalization, have in part been responsibte for the search for an alloplastic material that would function as an adequate graft: material for the atrophic mandible. HA is a dense biocompatible material that can be produced synthetically or obtained from biolog

Superior Border Augmentation

Superior Border Augmentation Superior border augmentation with a bone graft is occasionally jndicated when severe resorption of the mandible results in inadequate height and contour and potential risk of fracture or when the treatment plan calls for placement of implants in areas of insufficient bone  height or width. Neurosensory disturbances from inferior alveolar nerve dehiscence at the location of the ment


MANDIBULAR AUGMENTATION Augmentation grafting adds strength, to an extremely deficient mandible and improves the height and contour of the available bone for implant placement on denture-bearing areas. Sources of graft ma erial include autogenous or allogeneic bone and alloplastic materials.Historically, autogenous bone has been the most biologically acceptable material used in mandibular augmentation. Disadva


OVERDENTURE SURGERY Alveolar bone is maintained primarily in response to  stresses transferred to the bone through the teeth and periodontal ligament during mastication. By maintaing teeth wherever possible, resorption of bone under a prosthetic appliance may be minimized. An overdenture te hnique attempts to maintain teeth in the alveolus by transferring force directly to the bone and improving masticatory f