Department of Oral- and Cranio-Maxillofacial Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
Private Practice, Mutlangen, Germany.
Int J Implant Dent. 2021 Nov 19;7(1):113. doi: 10.1186/s40729-021-00390-3.
For alveolar ridge preservation, various treatment protocols have been described. While most studies focus on the effect of the bone graft material, the aim of this study was to analyze the influence of different soft-tissue management techniques on the soft and hard tissue.
A total of 20 maxillary extraction sockets were grafted with an anorganic xenogenic bone graft and then randomly treated with either a combined epithelialized-subepithelial connective tissue graft (CECG) or a porcine collagen matrix (CM) placed in labial and palatal tunnels. Measurements of soft-tissue thickness were performed at tooth extraction (T0), implant insertion (T1) and second stage surgery (T2).
In the CECG group, gingival thickness was 1.18 ± 0.56 mm (T0), 1.29 ± 0.26 mm (T1) and 1.2 ± 0.32 mm (T3). In the CM group, the measurements were 1.24 ± 0.50 mm (T0), 1.6 ± 0.6 mm (T1) and 1.7 ± 1.06 mm. Thus, there was an overall increase in gingival thickness from T0 to T2 of 0.02 ± 0.66 mm (CECG) compared to 0.46 ± 0.89 mm (CM). The thickness of keratinized soft-tissue was 3.91 ± 1.11 mm (CECG) and 4.76 ± 1.48 mm (CM) before extraction and 3.93 ± 1.17 mm (CECG) and 4.22 mm ± 1.26 mm (CM) at implant follow-up. Mean peri-implant probing depths were 3.15 ± 1.39 mm (CECG) and 3.41 ± 0.99 mm (CM).
After ridge preservation, comparable soft-tissue parameters were observed in both groups, whether treated with a collagen matrix or a combined autologous connective tissue graft.
对于牙槽嵴保存，已经描述了各种治疗方案。虽然大多数研究都集中在骨移植材料的效果上，但本研究的目的是分析不同软组织管理技术对软硬组织的影响。
总共 20 个上颌拔牙窝用无机异种骨移植材料进行移植，然后随机用上皮化-亚上皮结缔组织移植物（CECG）或置于唇侧和腭侧隧道的猪胶原基质（CM）进行处理。在拔牙（T0）、种植体植入（T1）和二期手术（T2）时测量软组织厚度。
在 CECG 组中，牙龈厚度分别为 1.18 ± 0.56 mm（T0）、1.29 ± 0.26 mm（T1）和 1.2 ± 0.32 mm（T2）。在 CM 组中，测量值分别为 1.24 ± 0.50 mm（T0）、1.6 ± 0.6 mm（T1）和 1.7 ± 1.06 mm。因此，从 T0 到 T2，CECG 组牙龈厚度总体增加了 0.02 ± 0.66 mm，而 CM 组增加了 0.46 ± 0.89 mm。角化软组织的厚度在 CECG 组分别为 3.91 ± 1.11 mm 和 4.76 ± 1.48 mm（拔牙前）、3.93 ± 1.17 mm 和 4.22 mm ± 1.26 mm（种植体随访时），CM 组分别为 3.91 ± 1.11 mm 和 4.76 ± 1.48 mm（拔牙前）、3.93 ± 1.17 mm 和 4.22 mm ± 1.26 mm（种植体随访时）。种植体周围探诊深度的平均值在 CECG 组分别为 3.15 ± 1.39 mm 和 3.41 ± 0.99 mm。
在牙槽嵴保存后，用胶原基质或联合自体结缔组织移植物处理的两组，观察到相似的软组织参数。
