Tschernitschik H, Nussbaum G
Dtsch Zahnarztl Z. 1989 Oct;44(10):800-2.
The effects of a modified Bonwill clasp on periodontal health have been studied for an observation period of 2 years. The results indicate that oral hygiene is more important than the dimensions of the clasp. It was only in cases with less than 2 mm distance between clasp and gingiva that a direct effect could be recognized. At the same time, this modified clasp seems to have a splinting effect, due to the superior transmission of masticatory forces. Further studies on clasp dimensions and the indications for this modified Bonwill clasp will, however, be necessary.
对改良的邦威尔卡环对牙周健康的影响进行了为期2年的观察研究。结果表明，口腔卫生比卡环尺寸更重要。只有在卡环与牙龈之间距离小于2毫米的情况下，才能识别出直接影响。同时，由于咀嚼力传递更好，这种改良卡环似乎具有夹板作用。然而，有必要对卡环尺寸和这种改良邦威尔卡环的适应证进行进一步研究。
