Section of Periodontology, Faculty of Health Sciences, University Clinic of Odontology, University of Oviedo, Oviedo, Spain.
Faculty of Odontology, ETEP Research Group, University Complutense of Madrid, Madrid, Spain.
Clin Oral Implants Res. 2021 Jan;32(1):88-99. doi: 10.1111/clr.13682.
To retrospectively assess the interproximal bone loss (CBL) in external hexagon implants (EHI), with different surface micro-topography, placed in the posterior mandible in patients with a history of periodontitis undergoing supportive periodontal care.
268 consecutive patients received 755 EHI implants in the mandibular molar region between 2007 and 2015 with the following surface characteristics: 72 turned, 145 hybrids (double acid-etched/turned), and 538 anodized. CBL was yearly evaluated by analysing calibrated digital periapical radiographs, with a follow-up of 1-6 years. Data on implant survival were also calculated.
At 6 years (53 patients), the mean CBL was 1.34/1.42 mm at patient/implant level, respectively (range: 0-5.2 mm). Significantly higher CBL was detected in anodized implants than in turned and hybrid implants (1.92/1.46/1.02 mm) (p < .01). The maximum CBL values were found in 2 anodized implants at 4 years (6.3 and 8.1 mm). CBL ≥2 mm was detected in 18% of implants at 3 years and 35% at 6 (p < 2.2 × 10 ), this prevalence being 2.6 times higher in the anodized than in the hybrid and turned group (40%/15.6%, p < .0094). At 6 years, 25 anodized implants presented CBL ≥3 mm (18%). 6 anodized implants (5 patients) were removed between 4 and 5 years.
A significant higher CBL was observed in anodized, compared to hybrid and turned implants, when placed in the mandibular molar region of periodontal patients, with a follow-up of 1 to 6 years.
回顾性评估有牙周病史并接受牙周支持治疗的患者下颌后牙区不同表面微形貌的外六方种植体（EHI）的邻间骨丧失（CBL）。
2007 年至 2015 年间，268 例连续患者在下颌磨牙区共植入 755 个 EHI，表面特征如下：72 个为旋压，145 个为双酸蚀/旋压混合，538 个为阳极氧化。通过分析校准的数字根尖射线照片，每年评估一次 CBL，随访 1-6 年。同时还计算了种植体的存活率数据。
6 年（53 例患者）时，患者/种植体水平的平均 CBL 分别为 1.34/1.42mm（范围：0-5.2mm）。阳极氧化种植体的 CBL 明显高于旋压和混合种植体（1.92/1.46/1.02mm）（p<.01）。4 年时，有 2 个阳极氧化种植体的最大 CBL 值达到 6.3 和 8.1mm。3 年时，有 18%的种植体出现 CBL≥2mm，6 年时为 35%（p<.0094）。阳极氧化组的患病率是混合组和旋压组的 2.6 倍（40%/15.6%，p<.0094）。6 年时，有 25 个阳极氧化种植体的 CBL≥3mm（18%）。6 例患者（5 例）在 4-5 年内取出了 6 个阳极氧化种植体。
在下颌后牙区有牙周病史的患者中，与混合组和旋压组相比，阳极氧化组的 CBL 明显更高，随访时间为 1-6 年。
