Tolboe H, Isidor F, Budtz-Jörgensen E, Kaaber S
Department of Prosthetic Dentistry, Royal Dental College, Aarhus, Denmark.
Scand J Dent Res. 1988 Oct;96(5):442-7. doi: 10.1111/j.1600-0722.1988.tb01581.x.
The purpose of the present study was to investigate plaque accumulation and inflammatory changes in the mucosa beneath fixed bridge pontics of various materials, in patients cleaning the infrapontic space daily. Fixed bridges with a tight but non-compressive contact to the mucosa in the pontic area and with interchangeable test specimens placed in the pontic base were constructed for five patients. During 4-wk periods the following materials were tested: alloys with a high or a low gold content, silver-palladium, cobalt-chromium, nickel-chromium and also a dental porcelain or a composite restorative resin. Between the test periods a "sanitary pontic" was used to enable recovery of the alveolar mucosa. Clinical examinations including exudate measurements demonstrated that the alveolar mucosa remained healthy irrespective of the material used when the dental floss was used regularly. The amount of plaque on the test specimens of the seven dental materials showed no consistent differences. The composition of the bacterial deposits showed no regular pattern. This investigation has demonstrated that patients maintaining a high standard of oral hygiene are able to prevent the development of inflammatory changes in the alveolar mucosa in contact with fixed bridge pontics irrespective of the pontic material used.
本研究的目的是调查在每日清洁桥体下方间隙的患者中，不同材料固定桥桥体下方黏膜的菌斑堆积和炎症变化。为5名患者制作了在桥体区域与黏膜紧密但无压迫接触、桥体底部放置可互换测试样本的固定桥。在4周的时间段内，测试了以下材料：高金或低金含量合金、银钯合金、钴铬合金、镍铬合金，以及牙科陶瓷或复合修复树脂。在测试阶段之间使用“卫生桥体”以使牙槽黏膜恢复。包括渗出物测量在内的临床检查表明，当定期使用牙线时，无论使用何种材料，牙槽黏膜均保持健康。七种牙科材料测试样本上的菌斑量没有一致的差异。细菌沉积物的组成没有规律模式。这项研究表明，保持高标准口腔卫生的患者能够预防与固定桥桥体接触的牙槽黏膜发生炎症变化，无论使用何种桥体材料。
