BACKGROUND The anatomy of soft tissues around dental implants is extremely important to prevent inflammatory periimplant diseases and ensure healthy, stable and long-term survival of a dental implant. Various methods and materials for increasing the physiological thickness of tissues have been described including connective tissue graft (CTG) and xenogenic collagen matrix (XCM). While assessing various materials it is necessary to establish objective measurement method to determine the minimum amount of tissue thickness to maintain a stable level of bone around the implant. The aim of the study was to determine the effect of soft tissues in the implant area on the marginal bone level in the implant area and to define of the critical gingival thickness to minimize marginal bone level (MBL) loss. METHODS 75 bone level implants (Conelog® Camlog, Switzerland) were inserted in the aesthetic area. Thickening of soft tissues was performed using CTG and XCM. 12 months after the loading with final restoration, the thickness of soft tissues in the implant area was examined with ultrasound USG device (Pirop®, Echoson, Poland), and each implant was subjected to RVG examination, where MBL loss was determined. RESULTS A tendency to occur less MBL loss was found when thicker gingiva was present. The higher soft tissue thickness was, the lower MBL loss has occurred. A critical value for tissue thickness was determined as TKT ≤ 2.88. CONCLUSIONS In case of thin biotype soft tissue augmentation is required when value of tissue thickness in ultrasound measure is less than 2.88 mm.

中文翻译：

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使用结缔组织移植物（CTG）和异种胶原基质（XCM）在牙科植入物周围进行软组织增强。1年随机对照试验。

背景技术牙齿植入物周围的软组织的解剖结构对于预防炎症性植入物周围疾病和确保牙齿植入物的健康，稳定和长期存活极为重要。已经描述了用于增加组织的生理厚度的各种方法和材料，包括结缔组织移植物（CTG）和异种胶原基质（XCM）。在评估各种材料时，有必要建立客观的测量方法以确定组织厚度的最小量，以维持植入物周围骨的稳定水平。该研究的目的是确定植入物区域中的软组织对植入物区域边缘骨水平的影响，并确定临界牙龈厚度以最小化边缘骨水平（​​MBL）损失。方法75颗骨水平植入物（Conelog®Camlog，瑞士）被插入美学区域。使用CTG和XCM进行软组织的增厚。加载并最终修复后12个月，用超声USG设备（Pirop？，Echoson，波兰）检查植入物区域中软组织的厚度，并对每个植入物进行RVG检查，确定MBL丢失。结果发现存在较厚的牙龈时，MBL损失较少。软组织厚度越高，发生的MBL损失越少。组织厚度的临界值确定为TKT≤2.88。结论在薄型生物型的情况下，当超声测量中的组织厚度值小于2.88 mm时，需要软组织增大。加载并最终修复后12个月，用超声USG设备（Pirop？，Echoson，波兰）检查植入物区域中软组织的厚度，并对每个植入物进行RVG检查，确定MBL丢失。结果发现存在较厚的牙龈时，MBL损失较少。软组织厚度越高，发生的MBL损失越少。组织厚度的临界值确定为TKT≤2.88。结论在薄型生物型的情况下，当超声测量中的组织厚度值小于2.88 mm时，需要软组织增大。加载并最终修复后12个月，用超声USG设备（Pirop？，Echoson，波兰）检查植入物区域中软组织的厚度，并对每个植入物进行RVG检查，确定MBL丢失。结果发现存在较厚的牙龈时，MBL损失较少。软组织厚度越高，发生的MBL损失越少。组织厚度的临界值确定为TKT≤2.88。结论在薄型生物型的情况下，当超声测量中的组织厚度值小于2.88 mm时，需要软组织增大。结果发现存在较厚的牙龈时，MBL损失较少。软组织厚度越高，发生的MBL损失越少。组织厚度的临界值确定为TKT≤2.88。结论在薄型生物型的情况下，当超声测量的组织厚度值小于2.88 mm时，需要软组织增大。结果当存在较厚的牙龈时，发现MBL损失较少的趋势。软组织厚度越高，发生的MBL损失越少。组织厚度的临界值确定为TKT≤2.88。结论在薄型生物型的情况下，当超声测量的组织厚度值小于2.88 mm时，需要软组织增大。