Israel M. Finger

Hydroxylapatite alveolar ridge reconstruction: Clinical experiences, complications, and technical modifications

Results of the reconstruction of 228 deficient alveolar ridges (208 patients) using hydroxylapatite with or without autogenous cancellous bone over a six-year period are reported. Complications included erosion, mental nerve neuropathy, migration and displacement of particles, overfill, and loose material. Modified techniques are presented that minimize the occurrence of these complications in Class III and IV ridge-deficient patients.

Prosthodontic management of the hydroxylapatite denture patient: A preliminary report

A 4-year study and evaluation of nonresorbable hydroxylapatite to augment different alveolar ridges has been reported. The technique used resulted in improved contour, height, and width of the alveolar ridge. It was found that denture comfort improved with ridge augmentation as this allowed improved stability, support, and preservation of the ridge. Patient satisfaction was correlated to both surgical and prosthodontic success with the use of hydroxylapatite. The state and health of the tissues were found to be improved with the use of hydroxylapatite or hydroxylapatite and bone marrow. The prosthetic and surgical procedures were found to be easier to perform, and they produced more permanent and superior results than those previously experienced with only bone grafts and other alloplasts.

Tissue-supported implant overdentures.

Overdenture techniques can be modified for use with implants. Generally the implants, which replace the tooth roots, can be placed in a position to permit optimum retention and stability as well as enhancing esthetics. Bony undercuts, which at times are present with the retention of tooth roots, are not a problem when using implants. Various retentive schemes are available to retain the prosthesis and can be matched to the individual needs of patients in regard to retention, stability, and the ability to insert and remove prostheses. Two implants can adequately support an overdenture. The superstructure must be designed to enable the patient to maintain a healthy oral environment. The patient must understand and be able to perform required oral hygiene procedures. The use of overdentures over implants affords the dentist another option in meeting the needs of the patients. (Implant Dent 1992;1:69–77)

Comparison of a universal mounting jig to a face-bow

Abstract A study comparing different face-bows and a new mounting jig was undertaken. Face-bows were recorded and casts mounted. Measurements were made and compared. A statistical comparison of these records indicated little difference in the mounted positions of the different face-bow records.

Modifications of the superstructure for the staple implant

Two techniques have been described to expedite fabrication and reduce the cost of prostheses made for staple implants. The techniques permit placement of a simulated transosseous pin within the master cast. At the time of denture placement in technique No. 1, the coping-bar attachment assembly is cemented (Fig. 12). In technique No. 2 the superstructure is placed over the transosteal pins and secured between the locknuts to maintain the base of the lower locknut 1.5 mm from the crest of the alveolar ridge (Fig. 13). Technique No. 2 permits removal of the superstructure as desired. Patients should be instructed in proper oral hygiene and denture care.

A method of repairing occlusally worn or broken-down complete-arch fixed implant prostheses

An occlusally worn or broken-down denture can present problems for the patient who must wear it and challenges for the dentist who must correct the condition. Many times an alternative to replacing the denture must be found. A method of restoring the occlusal surface of a worn or broken-down complete-arch fixed implant prosthesis is described.