| 2079 Efficacy of 3mm Implants in Areas of Limited Spacing | ||
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N.R. SMITH, S.J. O'NEAL, S. HAIGH, and M.S. REDDY, University of Alabama at Birmingham, USA Objective: Those spaces which normally would be occupied by maxillary lateral incisors or mandibular incisors are often too narrow to place a conventional two-piece implant. The narrow tooth-to-tooth spacing requires an alternative design to provide adequate biomechanical strength for function. This study evaluates the immediate loading of a one-piece transmucosal 3mm diameter design. The objective of this study is to determine the loss of alveolar bone, changes in interdental papillae, and initial healing success when one-piece narrow diameter implants are immediately loaded. Methods: Twenty implants were placed in 11 subjects over 15 years of age, nonsmokers, and free of significant medical conditions. The implants were in immediate function at baseline surgical visit. Digital photographs were made at each visit to access soft tissue healing. Standardized radiographs were made at baseline, interim healing and 6 months post-surgery. Radiographs were digitized and change in bone height was measured relative to a consistent landmark on the implant. A one sided t-test was used to determine statistical differences on bone height. Results: All implants clinically osseointegrated and survived through initial healing period. The mean baseline bone height was 2.33±0.73mm above the first thread. Mean bone height up to six months post restoration was 1.75±0.78mm. There was a statistically significant loss of bone support over initial healing period of 0.58mm (p<0.01). Conclusions: This study indicates that bone loss after immediate function of narrow one-piece implants is statistically significant. However, loss of bone may not be clinically significant. Compared to historical controls, with wider diameter two-stage delayed loaded implants the 3mm one-piece implants showed highly favorable initial loading results. The initial results suggest that this narrow diameter one-piece immediately loaded implant is an effective prosthetic treatment for areas of limited space. Supported by BioHorizons | ||
| Seq #231 - Clinical Research 2:00 PM-4:00 PM, Friday, 11 March 2005 Baltimore Convention Center Exhibit Hall E-F | ||
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