Abstract：
OBJECTIVE: To evaluate the effect of osteotomy preparation technique and implant diameter on primary stability and bone-implant interface of short implants (6mm), when placed in bone with high degree of cancellous content.
METHODS: 90 short (S) implants (6 mm) divided in nine groups based on width (Narrow 4.2 mm, Regular 4.8 mm, Wide 5.4 mm) (N,R,W) and osteotomy preparation (Standard, Osteotome, Osseodensification) (ST, OT, OD) and placed in porcine tibia plateau bone samples: Group SN-ST; Group SN-OT; Group SN-OD; Group SRST; Group SR-OT; Group SR-OD; Group SW-ST; Group SW-OT and Group SW-OD. Insertion torque and Implant Stability Quotient (ISQ) were measured. Four implants from each group SNST, SN-OT, SN-OD were evaluated histomorphometrically.
RESULTS: Insertion torque was significantly higher for implants of Group SW-OD compared to Group SW-ST (50.00 ±14.14 Ncm vs 28.00 ±10.85 Ncm, p= 0.005) and Group SW-OT compared to Group SW-ST (46.87 ±17.10 Ncm vs 28.00 ±10.85 Ncm, p=0.026). Insertion torque was significantly higher for implants of Group SW-OD compared to Group SN-OD (50.00 ±14.14 Ncm vs 31.5 ±15.82 Ncm, p=0.04). No significant differences were observed for the percentage of bone, marrow space and connective tissue in contact to the implant surface between studied groups.
CONCLUSIONS: Osteotomy preparation technique at sites with high degree of cancellous content can influence the implant insertion torque for short and wide implants (5.4x6mm). Implant width can influence the insertion torque of short implants placed with the osseodensification technique.
METHODS: 90 short (S) implants (6 mm) divided in nine groups based on width (Narrow 4.2 mm, Regular 4.8 mm, Wide 5.4 mm) (N,R,W) and osteotomy preparation (Standard, Osteotome, Osseodensification) (ST, OT, OD) and placed in porcine tibia plateau bone samples: Group SN-ST; Group SN-OT; Group SN-OD; Group SRST; Group SR-OT; Group SR-OD; Group SW-ST; Group SW-OT and Group SW-OD. Insertion torque and Implant Stability Quotient (ISQ) were measured. Four implants from each group SNST, SN-OT, SN-OD were evaluated histomorphometrically.
RESULTS: Insertion torque was significantly higher for implants of Group SW-OD compared to Group SW-ST (50.00 ±14.14 Ncm vs 28.00 ±10.85 Ncm, p= 0.005) and Group SW-OT compared to Group SW-ST (46.87 ±17.10 Ncm vs 28.00 ±10.85 Ncm, p=0.026). Insertion torque was significantly higher for implants of Group SW-OD compared to Group SN-OD (50.00 ±14.14 Ncm vs 31.5 ±15.82 Ncm, p=0.04). No significant differences were observed for the percentage of bone, marrow space and connective tissue in contact to the implant surface between studied groups.
CONCLUSIONS: Osteotomy preparation technique at sites with high degree of cancellous content can influence the implant insertion torque for short and wide implants (5.4x6mm). Implant width can influence the insertion torque of short implants placed with the osseodensification technique.
摘要：
目的：评估截骨准备技术和植入物直径对短植入物（6mm）的主要稳定性和骨-植入物界面的影响，当放置在骨中时具有高程度的松质含量。
方法：90个短（S）植入物（6mm）根据宽度分为9组（窄4.2mm，常规4.8mm,宽5.4mm)(N,R,W)和截骨准备(标准，骨凿,骨致密化)(ST,OT,OD）并置于猪胫骨高原骨样本中：SN-ST组；SN-OT组；SN-OD组；SRST组；SR-OT组；SR-OD组；SW-ST组；SW-OT组和SW-OD组。测量插入扭矩和植入物稳定性商(ISQ)。SNST每组四个植入物，SN-OT,SN-OD进行组织形态测量。
结果：SW-OD组植入物的插入扭矩明显高于SW-ST组（50.00±14.14Ncmvs28.00±10.85Ncm，p=0.005），SW-OT组与SW-ST组相比（46.87±17.10Ncmvs28.00±10.85Ncm，p=0.026)。SW-OD组植入物的插入扭矩明显高于SN-OD组（50.00±14.14Ncmvs31.5±15.82Ncm，p=0.04)。骨百分比没有观察到显著差异，研究组之间与植入物表面接触的骨髓间隙和结缔组织。
结论：松质骨含量高的部位的截骨准备技术会影响短种植体和宽种植体（5.4x6mm）的种植体插入扭矩。植入物宽度会影响使用骨致密化技术放置的短植入物的插入扭矩。
方法：90个短（S）植入物（6mm）根据宽度分为9组（窄4.2mm，常规4.8mm,宽5.4mm)(N,R,W)和截骨准备(标准，骨凿,骨致密化)(ST,OT,OD）并置于猪胫骨高原骨样本中：SN-ST组；SN-OT组；SN-OD组；SRST组；SR-OT组；SR-OD组；SW-ST组；SW-OT组和SW-OD组。测量插入扭矩和植入物稳定性商(ISQ)。SNST每组四个植入物，SN-OT,SN-OD进行组织形态测量。
结果：SW-OD组植入物的插入扭矩明显高于SW-ST组（50.00±14.14Ncmvs28.00±10.85Ncm，p=0.005），SW-OT组与SW-ST组相比（46.87±17.10Ncmvs28.00±10.85Ncm，p=0.026)。SW-OD组植入物的插入扭矩明显高于SN-OD组（50.00±14.14Ncmvs31.5±15.82Ncm，p=0.04)。骨百分比没有观察到显著差异，研究组之间与植入物表面接触的骨髓间隙和结缔组织。
结论：松质骨含量高的部位的截骨准备技术会影响短种植体和宽种植体（5.4x6mm）的种植体插入扭矩。植入物宽度会影响使用骨致密化技术放置的短植入物的插入扭矩。
