Korsch Michael, Alt Kurt Werner, Mock Frederick Reza
Dental Academy for Continuing Professional Development, Karlsruhe, Lorenzstrasse 7, 76135 Karlsruhe, Germany.
Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421 Homburg, Germany.
Bioengineering (Basel). 2023 Apr 7;10(4):456. doi: 10.3390/bioengineering10040456.
Tooth Shell Technique (TST) with the use of autologous dentin has proven to be a suitable method of grafting in the context of lateral ridge augmentation. This present feasibility study aimed to retrospectively evaluate the preservation by lyophilization of processed dentin. Thus, the frozen stored processed dentin matrix (FST: 19 patients with 26 implants) was re-examined with that of processed teeth used immediately after extraction (IUT: 23 patients with 32 implants). Parameters of biological complications, horizontal hard tissue loss, osseointegration, and buccal lamella integrity were used for evaluation. For complications, the observation period was 5 months. Only one graft was lost (IUT group). In the area of minor complications, without the loss of an implant or augmentation, there were two cases of wound dehiscence and one case with inflammation and suppuration (IUT: = 3, FST: = 0). Osseointegration and integrity of the buccal lamella were present in all implants without exception. Statistically, there was no difference between the groups studied for the mean resorption of the crestal width and the buccal lamella. Results of this study show that prepared autologous dentin preserved with a conventional freezer had no disadvantage compared to immediately use autologous dentin in terms of complications and graft resorption in the context of TST.
使用自体牙本质的牙壳技术（TST）已被证明是一种在侧方牙槽嵴增高术中合适的植骨方法。本可行性研究旨在回顾性评估冻干处理后牙本质的保存情况。因此，将冷冻保存的处理后牙本质基质（FST：19例患者，26颗种植体）与拔牙后立即使用的处理后牙齿（IUT：23例患者，32颗种植体）进行重新检查。使用生物并发症、水平硬组织丧失、骨整合和颊侧骨板完整性等参数进行评估。对于并发症，观察期为5个月。仅1例植骨失败（IUT组）。在轻微并发症区域，未出现种植体或植骨丧失，有2例伤口裂开，1例伴有炎症和化脓（IUT：n = 3，FST：n = 0）。所有种植体均无一例外存在骨整合和颊侧骨板完整性。统计学上，在研究组之间，牙槽嵴宽度和颊侧骨板的平均吸收情况无差异。本研究结果表明，在TST中，就并发症和植骨吸收而言，用传统冷冻保存的制备好的自体牙本质与立即使用自体牙本质相比并无劣势。
