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Volume 9 , Issue 2
March/April 1994

Pages 214-222

Radiographic Analysis of a Two-Piece Apatite Implant: Part II. Preliminary Report of 2-Year Observation

Tetsuo Ichikawa, DDS, PhD/Masashi Miyamoto, DDS, PhD/Yasuyuki Horisaka, DDS, PhD/Masonobu Horiuchi, DDS, PhD

PMID: 8206558

Marginal bone height and bone density were evaluated for 2 years after two-piece dense hydroxyapatite implant (Apaceram) placement using standardized radiography and digital image processing. The chronological changes in marginal bone height were divided into three groups: Group level was constant or became higher with time; Group II bone decreased gradually after superstructure placement; and Group III bone decreased in height rapidly after abutment placement. Bone density around the successful Apaceram implant, especially in the crestal region, increased clearly. The results suggest that bone resorption/formation around the implant is related to occlusal stress, and that adequate occlusal stress should be exerted on the implant at each phase after the implant placement. (INT J ORAL MAXILLOFAC IMPLANTS 1994;9:214 222)

Key words: Apaceram implant, bone remodeling, dense hydroxyapatite, digital image processing

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