Schmitter Marc, Huy Claudia, Ohlmann Brigitte, Gabbert Olaf, Gilde Herbert, Rammelsberg Peter
Poliklinik für Zahnärztliche Prothetik der Universität Heidelberg, Im Neuenheimer Feld 400, Heidelberg, Germany.
J Endod. 2006 Apr;32(4):328-30. doi: 10.1016/j.joen.2005.09.015. Epub 2006 Feb 7.
The aim of this in vitro study was to evaluate the fracture resistance of upper and lower incisors restored with glass fiber reinforced posts (FRP). There were 32 upper and 32 lower incisors endodontically treated and FRPs were cemented, using pretreated (Rocatec) and non-pretreated posts. Crowns were fabricated and cemented with Ketac-cem or Panavia. Additionally, eight upper and lower incisors with intact natural crowns were used as control groups. Mandibular incisors restored with FRPs attain fracture strengths comparable to those of natural teeth. The fracture strength of all teeth was increased by using Rocatec. Cementation of the crowns using Panavia only increased the fracture strength in upper incisors. Rocatec used to pretreat the posts and crowns cemented using an adhesive cement appear to reduce the risk of clinical failure.
本体外研究的目的是评估用玻璃纤维增强桩（FRP）修复的上下切牙的抗折性能。选取32颗上切牙和32颗下切牙进行根管治疗，使用经过预处理（Rocatec）和未经过预处理的桩来粘结FRP。制作牙冠并用Ketac-cem或Panavia粘结。此外，选取8颗具有完整天然牙冠的上切牙和下切牙作为对照组。用FRP修复的下颌切牙获得的抗折强度与天然牙相当。使用Rocatec可提高所有牙齿的抗折强度。仅使用Panavia粘结牙冠仅提高了上切牙的抗折强度。用于预处理桩的Rocatec和使用粘结性粘结剂粘结牙冠似乎可降低临床失败风险。
