| Autor: |
Mostovei, Andrei, Topalo, Valentin, Chele, Nicolae, Dabija, Ion, Zanoaga, Oleg, Motelica, Gabriela |
| Předmět: |
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| Zdroj: |
Clinical Oral Implants Research; Oct2018 Supplement S17, Vol. 29 Issue 17, p457-457, 1p |
| Abstrakt: |
Background: In posterior edentulous maxilla, in cases of residual bone height (RBH) less than 4 mm the lateral sinus floor elevation with the delayed implants placement is recommended. However, even in such situations, it is often possible to place implants. It is necessary to appreciate the possibility of lateral sinus floor elevation with simultaneous implants placement using non‐submerged approach. Aim/Hypothesis: The evaluation of implants integration in cases of non‐submerged approach simultaneously with lateral sinus floor elevation in residual bone height less than 4 mm. Material and Methods: The study was axed on 7 partially edentulous patients (43.24 years, standard error of 3.9 years) who received 16 two‐piece dental implants (extended platform, conical connection, 3.6–4 mm diameter and 10–12 mm length) inserted in posterior sides of the maxilla with lateral‐sinus floor elevation (grafted with collagen and hydroxyapatite sponges). The residual bone height was 3.43 mm (Standard error of 0.08 mm). Due to the insertion torque higher than 15–20 Ncm, the healing abutments (3–5 mm height) were connected before suturing. The radiographic examinations were performed before, after the surgery and at the end of healing period. After 6 months, the prosthetic treatment has been initiated. According to the panoramic x‐rays, implants sides were divided into anterior and posterior ones. The secondary stability, endosinus bone gain as well as the marginal bone loss were appreciated. Statistical analysis was made by calculating mean values and standard errors (SE). Results: All implants successfully integrated and the healing period was uneventful. The length of implants protruded into sinus were 8.12 (SE = 0.23) mm and 8.15 (SE = 0.17) mm from mesial and distal aspects. After healing, the endo‐sinus bone gain was 7.92 (SE = 0.23) mm and 7.89 (SE = 0.19) mm respectively. The crestal bone loss consisted – 0.41 (SE = 0.09) mm from mesial and 0.37 (SE = 0.08) mm from distal aspects. The secondary stability (Periotest values) were −4.62 (SE = 0.256). Peri‐implant mucosa showed signs of bleeding only around 2 implants (type 2 by Mombelli) due to plaque accumulation on the healing abutments. Radiographically, the new formed bone had the same opacity and structure as the native bone. Conclusions and Clinical Implications: In case of residual bone height less than 4 mm, it's possible to perform the lateral sinus floor elevation and implants placement using non‐submerged approach (one‐step surgery) if the insertion torque is higher than 15–20 Ncm. This technique is advantageous due to reduced terms of healing, less number of surgeries and a mature biological width at the end of healing. According to progressive loading theory, the presence of healing caps may lead to a better quality bone formation during healing. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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