In Vivo Evaluation of Two-Piece Implants Placed Following One-Stage and Two-Stage Surgical Protocol in Posterior Mandibular Region. Assessment of Alterations in Crestal Bone Level

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Abstract
Endosseous implants can be placed following either two‐stage technique requiring second‐stage surgery or one‐stage technique, which does not involve a second surgical intervention. The present study was undertaken to evaluate and compare the changes in crestal bone level when two‐piece implants were placed in posterior mandibular region following one‐stage and two‐stage surgical protocol. A parallel group randomized prospective study was designed in which 20 two‐piece implants were placed in the posterior mandibular region of 16 partially edentulous healthy patients following either one‐stage (Group I) or a two‐stage surgical protocol (Group II). Alterations in crestal bone level were assessed with the help of DentaScan at baseline, that is, at the time of implant placement, third month and sixth month. Nonsignificant differences were seen in both groups in terms of changes in crestal bone level at the final evaluation. Hence, it could be concluded that two‐piece implants can be placed following one‐stage surgical protocol as predictably as when two‐stage surgical technique is followed.

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