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Tapered Versus Inverted Body-Shift Implants Placed Into Anterior Post-extraction Sockets: A Retrospective Comparative
Stephen J Chu1, Jocelyn H P Tan-Chu2, Hanae Saito3
1Adjunct Clinical Professor, Ashman Department of Periodontology and Implant Dentistry, Department of Prosthodontics, New York University College of Dentistry, New York, New York.
Inverted body-shift (INV) implants demonstrated superior primary stability and bone volume compared to tapered (T) implants. This resulted in better esthetic outcomes, making INV implants a potentially advantageous choice for anterior maxillary tooth replacement.
Area of Science:
- Dental Implantology
- Periodontology
- Oral Surgery
Background:
- Comparative analysis of implant designs for tooth replacement.
- Evaluation of primary stability, bone volume, and esthetic outcomes.
- Focus on platform-switched implants in post-extraction sockets.
Purpose of the Study:
- To compare tapered (T) implants with inverted body-shift (INV) implants.
- To assess primary stability, bone volume, and esthetic results.
- To correlate radiographic and clinical outcomes in maxillary anterior implants.
Main Methods:
- Retrospective radiographic and clinical study of 42 platform-switched implants (21 T, 21 INV).
- Implants placed in maxillary central incisor post-extraction sockets.
- Primary stability, insertion torque, labial plate dimension, bone levels, and Pink Esthetic Score (PES) were measured.
Main Results:
- T implants showed lower primary stability and less bone volume than INV implants.
- Lower PES scores were observed with T implants, indicating increased recession, discoloration, and papilla loss.
- Statistically significant differences (P ≤ .05) favored INV implants for esthetic outcomes.
Conclusions:
- INV implants, with their macro hybrid design, offer advantages over T implants.
- Higher primary stability and superior esthetic outcomes are potential benefits of INV implants.
- INV implants may be preferable for maxillary anterior post-extraction sockets.
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