Clínica Eduardo Anitua, Jose Maria Cagigal Kalea, 19, 01007, Vitoria-Gazteiz, Álava, Spain.
BTI-Biotechnology Institute, Vitoria-Gazteiz, Álava, Spain.
Int J Implant Dent. 2022 Oct 4;8(1):40. doi: 10.1186/s40729-022-00438-y.
To compare the survival, changes in marginal bone level and prosthetic complications rate of short (≤ 6.5 mm) and longer implants (≥ 7.5) supporting a single-crown restoration in the maxillary/mandibular premolar or molar region.
This cohort study was conducted following the STROBE statement recommendations for observational studies. Clinical outcomes of 88 short implants in 78 patients and 88 long implants in 88 patients were examined. All the implants had been placed by the same surgeon and restored following the same prosthetic concept; using a transepithelial abutment (intermediate abutment) and a screw retained restoration.
All the implants were in function after the follow-up period since insertion (median: 31 months; range 11 to 84 for SiG vs median: 35 months; range: 6-117 for CG; p = 0.139). No statistical differences (p = 0.342) were observed related to prosthetic complications (screw loosening 2/88 vs 5/88 CG, ceramic chipping 1/88 vs 0/88, temporary crown resin chipping 1/88 vs 0/88 for SiG and CG, respectively) or related to marginal bone level (Mesial or Distal MBL ≥ 2 mm in 1/88 implants for SiG vs 3/88 for CG; p = 0.312).
Within the limitations of this study, no survival differences have been observed between short implants and longer implants in single-crown restorations in posterior maxilla/mandible.
比较上颌/下颌前磨牙或磨牙区单个冠修复体中短（≤6.5mm）和长（≥7.5mm）种植体的存活率、边缘骨水平变化和修复体并发症发生率。
本队列研究遵循 STROBE 声明对观察性研究的建议进行。共检查了 78 名患者 88 个短种植体和 88 名患者 88 个长种植体的临床结果。所有种植体均由同一位外科医生植入，并采用相同的修复体概念进行修复；使用上皮下基台（中间基台）和螺丝固位修复体。
所有种植体在插入后的随访期间均能正常使用（中位时间：31 个月；范围 11 至 84 个月用于 SiG，中位时间：35 个月；范围 6 至 117 个月用于 CG；p=0.139）。未观察到与修复体并发症（螺丝松动 2/88 例 vs CG 组 5/88 例、陶瓷崩瓷 1/88 例 vs CG 组 0/88 例、临时冠树脂崩瓷 1/88 例 vs CG 组 0/88 例）或边缘骨水平（近远中边缘骨水平≥2mm 的种植体 1/88 例用于 SiG 组，3/88 例用于 CG 组；p=0.312）相关的统计学差异（p=0.342）。
在本研究的限制范围内，在后牙上颌/下颌区单个冠修复体中，短种植体和长种植体之间未观察到存活率差异。
