Andersson Bernt, Glauser Roland, Maglione Michele, Taylor Asa
SIM/Prosthetic Dentistry, Specialist Dental Service, Sahlgrenska Universitetssjukhuset/Mölndal, Sweden.
Int J Prosthodont. 2003 Nov-Dec;16(6):640-6.
A prospective, randomized, controlled 5-year multicenter study evaluated the long-term clinical function of CerAdapt ceramic abutments compared to titanium abutments on Brånemark implants supporting short-span fixed partial dentures (FPD).
Initially, 105 Brånemark implants were placed in a total of 32 patients at three different clinics; 103 implants remained after initial healing. Fifty-three ceramic and 50 titanium abutments were connected to support 36 FPDs, 19 on ceramic and 17 on titanium abutments.
Thirty patients with 29 FPDs were examined after 5 years. There was a cumulative success rate of 97.2% for FPDs (94.7% for ceramic and 100% for titanium abutment-supported FPDs). One of 53 ceramic and none of 50 titanium abutments failed, giving survival rates of 98.1% and 100%, respectively. There was a mean marginal bone loss of 0.3 mm and 0.4 mm, respectively, for ceramic and titanium abutments. Soft tissues around abutments and adjacent teeth appeared healthy, and no significant differences were recorded for mucosal bleeding and plaque between ceramic and titanium abutments. Crown margins at FPD insertion were positioned as follows: 21% submucosally, 33% at the mucosal margin, and 46% supramucosally. Changes in mucosal level were recorded at 12% of the abutments, with 73% of all changes recorded at ceramic abutments. There was a balance between more or less exposed crown margins during the first 2 years, in contrast to the 2- to 5-year period, when all changes meant less exposed margins.
Safe long-term functional and esthetic results can be achieved with CerAdapt alumina ceramic abutments on Brånemark implants for short-span FPDs.
一项前瞻性、随机、对照的5年多中心研究评估了CerAdapt陶瓷基台与钛基台相比，在支持短跨度固定局部义齿（FPD）的Brånemark种植体上的长期临床功能。
最初，在三个不同诊所的32例患者中共植入105颗Brånemark种植体；初始愈合后剩余103颗种植体。连接53个陶瓷基台和50个钛基台以支持36个FPD，其中19个由陶瓷基台支持，17个由钛基台支持。
5年后对30例患者的29个FPD进行了检查。FPD的累积成功率为97.2%（陶瓷基台支持的FPD为94.7%，钛基台支持的FPD为100%）。53个陶瓷基台中有1个失败，50个钛基台中无一失败，生存率分别为98.1%和100%。陶瓷基台和钛基台的平均边缘骨吸收分别为0.3mm和0.4mm。基台和相邻牙齿周围的软组织看起来健康，陶瓷基台和钛基台之间在黏膜出血和菌斑方面未记录到显著差异。FPD就位时，冠边缘位置如下：21%位于黏膜下，33%位于黏膜边缘，46%位于黏膜上。在12%的基台处记录到黏膜水平变化，所有变化的73%记录在陶瓷基台上。在最初2年内，冠边缘暴露或多或少保持平衡，而在2至5年期间，所有变化均意味着边缘暴露减少。
对于短跨度FPD，在Brånemark种植体上使用CerAdapt氧化铝陶瓷基台可实现安全的长期功能和美学效果。
