Abstract：
OBJECTIVE: To evaluate the dimensional changes in free gingival grafts (FGG) at implant sites in mandibular reconstruction patients.
METHODS: Patients who received FGG 4 months after implant placement in the reconstructed mandible with no keratinized mucosa (KM) present were invited for re-examination after 36.7 ± 16.8 months (3.06 ± 1.4 years). Immediately after graft extraction (T0), graft width (GW), graft length (GL), graft thickness (GT), graft dimension (GD), and vertical bone height were documented. Re-examination (T1) included clinical examinations (GW, GL, GD, peri-implant probing depths, and modified Sulcus Bleeding Index), radiographic examination (marginal bone level), and medical chart review.
RESULTS: Twenty patients and 62 implants (47 in fibula flaps and 15 in iliac flaps) were included. A significant decrease in GW (51.8%), GL (19.2%), and GD (60.2%), were found between T0 and T1 (p < .001). The univariate analysis showed that GW change was not significantly associated with reconstruction technique, baseline GL, baseline GT, baseline GD, implant location, or type of prosthesis. Implant survival rate of 100% was observed at follow-up.
CONCLUSIONS: Within the limitations of the study, free gingival grafts at implant sites in the reconstructed mandible undergo dimensional change that result in a reduction of approximately 60% of the original graft dimension. Graft width decreased over 50%.
CONCLUSIONS: FGG is the standard of care intervention for increasing the amount of KM around implants. This study was the first to evaluate the dimensional change in FGG at implant sites in mandibular reconstruction patients after a medium-term follow-up.
BACKGROUND: Clinical trial registration is not applicable as this study comprehends a retrospective analysis.
METHODS: Patients who received FGG 4 months after implant placement in the reconstructed mandible with no keratinized mucosa (KM) present were invited for re-examination after 36.7 ± 16.8 months (3.06 ± 1.4 years). Immediately after graft extraction (T0), graft width (GW), graft length (GL), graft thickness (GT), graft dimension (GD), and vertical bone height were documented. Re-examination (T1) included clinical examinations (GW, GL, GD, peri-implant probing depths, and modified Sulcus Bleeding Index), radiographic examination (marginal bone level), and medical chart review.
RESULTS: Twenty patients and 62 implants (47 in fibula flaps and 15 in iliac flaps) were included. A significant decrease in GW (51.8%), GL (19.2%), and GD (60.2%), were found between T0 and T1 (p < .001). The univariate analysis showed that GW change was not significantly associated with reconstruction technique, baseline GL, baseline GT, baseline GD, implant location, or type of prosthesis. Implant survival rate of 100% was observed at follow-up.
CONCLUSIONS: Within the limitations of the study, free gingival grafts at implant sites in the reconstructed mandible undergo dimensional change that result in a reduction of approximately 60% of the original graft dimension. Graft width decreased over 50%.
CONCLUSIONS: FGG is the standard of care intervention for increasing the amount of KM around implants. This study was the first to evaluate the dimensional change in FGG at implant sites in mandibular reconstruction patients after a medium-term follow-up.
BACKGROUND: Clinical trial registration is not applicable as this study comprehends a retrospective analysis.
摘要：
目的：评估下颌骨重建患者种植部位游离牙龈移植物（FGG）的尺寸变化。
方法：将FGG植入重建下颌骨4个月后，没有角化粘膜（KM）的患者在36.7±16.8个月（3.06±1.4年）后被邀请重新检查。移植物提取后立即（T0），移植物宽度（GW），移植物长度（GL），移植物厚度（GT），移植物尺寸(GD)，记录垂直骨高度。复检（T1）包括临床检查（GW，GL,GD,种植体周围探测深度,并修改了沟出血指数)，放射学检查（边缘骨水平），和医学图表审查。
结果：包括20例患者和62个植入物（腓骨皮瓣47个，髂皮瓣15个）。GW大幅下降（51.8%），GL（19.2%），和GD（60.2%），发现在T0和T1之间(p<.001)。单因素分析表明，GW变化与重建技术无显著相关性，基线GL,基线GT,GD基线,植入位置,或假体类型。随访观察到种植成活率为100%。
结论：在研究的局限性内，在重建的下颌骨植入部位的游离牙龈移植物会发生尺寸变化，导致原始移植物尺寸减少约60％。移植物宽度减少超过50%。
结论：FGG是增加植入物周围KM量的护理干预标准。这项研究首次评估了中期随访后下颌骨重建患者植入部位FGG的尺寸变化。
背景：临床试验注册不适用，因为本研究包含回顾性分析。
方法：将FGG植入重建下颌骨4个月后，没有角化粘膜（KM）的患者在36.7±16.8个月（3.06±1.4年）后被邀请重新检查。移植物提取后立即（T0），移植物宽度（GW），移植物长度（GL），移植物厚度（GT），移植物尺寸(GD)，记录垂直骨高度。复检（T1）包括临床检查（GW，GL,GD,种植体周围探测深度,并修改了沟出血指数)，放射学检查（边缘骨水平），和医学图表审查。
结果：包括20例患者和62个植入物（腓骨皮瓣47个，髂皮瓣15个）。GW大幅下降（51.8%），GL（19.2%），和GD（60.2%），发现在T0和T1之间(p<.001)。单因素分析表明，GW变化与重建技术无显著相关性，基线GL,基线GT,GD基线,植入位置,或假体类型。随访观察到种植成活率为100%。
结论：在研究的局限性内，在重建的下颌骨植入部位的游离牙龈移植物会发生尺寸变化，导致原始移植物尺寸减少约60％。移植物宽度减少超过50%。
结论：FGG是增加植入物周围KM量的护理干预标准。这项研究首次评估了中期随访后下颌骨重建患者植入部位FGG的尺寸变化。
背景：临床试验注册不适用，因为本研究包含回顾性分析。
