Deinzer Renate, Harnacke Daniela, Mengel Reiner, Telzer Maria, Lotzmann Ulrich, Wöstmann Bernd
Department of Medicine, Institute of Medical Psychology, Justus Liebig University Giessen, Giessen, Germany.
Department of Prosthetic and Orofacial Function, School of Dental Medicine, Philipps University, Marburg/Lahn, Germany.
J Periodontol. 2016 Nov;87(11):1333-1342. doi: 10.1902/jop.2016.160099. Epub 2016 Jul 1.
This study was conducted to assess plaque removal skills in patients with fixed dental prostheses (FDP), and effectiveness of computer-based training (CBT) of different brushing techniques (Fones versus Bass technique in their common modifications).
Ninety-three patients with FDP were randomly allocated to one of three training groups: 1) C (control group); 2) F (Fones technique group); and 3) B (Bass technique group). All patients received CBT of the basics of toothbrushing. Group C received no further instructions while groups F and B received additional CBT of the modified Fones or the modified Bass technique, respectively. Plaque levels were assessed immediately after patients had been asked to perform oral hygiene to the best of their abilities.
Prior to training, persistent plaque deposits were found at 80% of marginal sites of natural teeth immediately after patients had performed oral hygiene. Considerably fewer plaque deposits were found on FDP (43%). No significant group differences were observed 6 and 12 weeks after training, either for natural teeth or for FDP (all P >0.05).
Plaque removal skills are low in patients with FDP. Apparently, they do not profit from CBT of the techniques studied here. Studies observing their actual brushing behavior should be conducted to elucidate reasons for their deficits and to explore why CBT does not work in this group of patients.
本研究旨在评估固定义齿（FDP）患者的牙菌斑清除技能，以及基于计算机的不同刷牙技术（改良的Fones法与改良的Bass法）培训（CBT）的效果。
93例FDP患者被随机分配到三个训练组之一：1）C组（对照组）；2）F组（Fones技术组）；3）B组（Bass技术组）。所有患者均接受了刷牙基本知识的CBT培训。C组未接受进一步指导，而F组和B组分别接受了改良Fones技术或改良Bass技术的额外CBT培训。在患者被要求尽最大能力进行口腔卫生清洁后，立即评估牙菌斑水平。
训练前，患者进行口腔卫生清洁后，天然牙边缘部位80%存在持续性牙菌斑沉积。FDP上发现的牙菌斑沉积明显较少（43%）。训练6周和12周后，无论是天然牙还是FDP，各组之间均未观察到显著差异（所有P>0.05）。
FDP患者的牙菌斑清除技能较低。显然，他们并未从这里研究的技术的CBT培训中获益。应开展观察其实际刷牙行为的研究，以阐明其缺陷的原因，并探讨为何CBT在这组患者中不起作用。
