Caneva M, Botticelli D, Rossi F, Cardoso LC, Pantani F, Lang

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Presentation transcript:

Caneva M, Botticelli D, Rossi F, Cardoso LC, Pantani F, Lang Influence of implants with different sizes and configurations installed immediately into extraction sockets on peri-implant hard and soft tissues: an experimental study in dogs Caneva M, Botticelli D, Rossi F, Cardoso LC, Pantani F, Lang Clin. Oral Impl. Res. 23, 2012, 396–401 Presenter: 碩二 古正德 Date:2012/04/03

Introduction Implant installation into the alveolus immediately after tooth extraction did not result in the maintenance of the buccal bony wall at its original level. ( Botticelli et al. 2004; Arau´ jo et al. 2005….) Implants placed immediately after tooth extraction revealed that the more buccally an implant was installed, the less the implant surface was covered by bone and soft tissue (Tomasi et al. 2010)

Introduction Implants were placed in different positions with respect to the buccal/lingual alveolar bony walls or implants had different sizes and configurations; the more lingual the buccal surface of the implants was placed, the less the surface was exposed. (Caneva et al. 2010c,2010d) none of the experimental studies mentioned evaluated the adaptations of the soft tissues encountered in relation to the alveolar bone.

Aim To study the influence on the healing of soft and hard peri-implant tissues when implants of different sizes and configurations were installed into sockets immediately after tooth extraction

Material and methods Six Labrador dogs (each approximately 22 kg and with a mean age of 2 years) Transmucosal cylindrical implants, 3.3 mm in diameter and 11.5 mm in length in the control sites and transmucosal conical 5 mm in diameter and 11.5 mm in length in the test sites, were installed into the distal socket of the fourth mandibular premolars in dogs immediately after tooth extraction After 4 months, the hard and soft tissue healing was evaluated histologically.

Material and methods

Material and methods

Material and methods PM: margin of the peri-implant mucosa; IS: implant shoulder aJE: apical termination Of junctional epithelium; B: most coronal bone-to-implant contact location; C: top of the alveolar crest projected onto the implant surface

Results

Results

Results

Material and methods PM: margin of the peri-implant mucosa; IS: implant shoulder aJE: apical termination Of junctional epithelium; B: most coronal bone-to-implant contact location; C: top of the alveolar crest projected onto the implant surface

Results

Results

Material and methods PM: margin of the peri-implant mucosa; IS: implant shoulder aJE: apical termination Of junctional epithelium; B: most coronal bone-to-implant contact location; C: top of the alveolar crest projected onto the implant surface

Results

Conclusion Distance between the implant surface and the outer contour of the buccal alveolar bony crest influenced the resorption of the buccal bony plate Peri-implant mucosal unit will be established at a more apical level at the test (larger conical implant) when compared with the control (smaller cylindrical implant) sites

Thank you for your attention!