CONTROL ID: 2603894
CONTACT: Tamsin, Cracknell
CURRENT CATEGORY: Case Reports/Case Series (Poster Only)
PRESENTATION TYPE: Poster
Guided Tissue Preservation: Case Report of a New Approach for Immediate Molar Replacement Using an Anatomically Shaped Implant and Healing Abutment
AUTHORS: Amato, Francesco
Molar extraction is associated with bucco-palatal/bucco-lingual shrinkage of up to 50%, mainly within the first 3 months post-extraction. Immediate implant placement may preserve ridge width, but shrinkage still occurs with standard-diameter implants in fresh molar sockets.
This study aimed to investigate hard and soft tissue changes using extra-wide-body tapered implants, immediately inserted in fresh molar extraction sockets, and connected with anatomically shaped PEEK healing abutments.
Method: Three patients received three extra-wide-body implants in fresh molar extraction sockets (one maxillary and two mandibular). PEEK healing abutments were adapted to mimic the anatomy of the extracted crown and installed without suturing. Alginate impressions were taken on the day of implant insertion before extraction (T0) and at 1 month (T1). Bucco-Palatal Dimension (BPD) was measured on the study casts at 1, 3 and 5mm apical to the free gingival margin.
Results: No implants had failed at 1 month. Comparing alginate impressions at T0 and T1 showed a mean BPD reduction of 0,2% on hard and soft tissue level. The soft tissue around the PEEK abutments was healthy with no inflammation.
Conclusion: These results show that the use of anatomically sized and shaped implants and healing abutments in molar fresh extraction sockets minimizes post-extraction volumetric tissue reduction, thus preserving the original alveolar volume and soft tissue emergence profile.
Figure 1: Post-operative peri-apical radiograph and occlusal view of extra-wide body implant and anatomically shaped healing abutment for immediate molar replacement.
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