期刊
CLINICAL ORAL INVESTIGATIONS
卷 26, 期 3, 页码 2711-2717出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00784-021-04244-5
关键词
Composite; Depth marking; Restoration replacement; Tooth substance loss; Time requirement; White-opaque liner
资金
- Kulzer (Mitsui Chemicals Group, Hanau, Germany)
The use of a white-opaque flowable composite as a depth marker in tooth restorations can significantly reduce tooth structure loss and shorten restoration removal time. This method may provide a visual aid for practitioners and help protect against tooth damage during composite restoration procedures.
Objectives Removal of esthetic restorations leads to loss of tooth structure and the extent of the loss is difficult to estimate due to exact-shade matching. This randomized double-blinded in vitro study aimed examining the influence of a white-opaque flowable composite depth marker as an optical removal aid for tooth substance preservation and shortened restoration removal time. Materials and methods Class II cavities (n = 100) in extracted healthy mandibular molars (n = 50, two runs) were prepared, filled, and the restoration removed. Tooth weight and volume (before and after) and removal time were measured and remnants visually documented. An optimal tooth shade-matched flowable composite liner was used as control. Results Tooth structure loss was significantly lower using a white-opaque liner. Mean values for volume/weight loss were 0.037 +/- 0.030 g and 0.016 +/- 0.005 cm(3) (p < 0.01) for white-opaque liner; 0.067 +/- 0.000 g and 0.028 +/- 0.003 cm(3) (p < 0.01) for tooth-colored composite. Removal time and number of pulp chamber perforations showed no significant differences (p = 0.80). Conclusions Within the limitations of this randomized double-blinded in vitro study, the use of a white-opaque flowable liner as a depth marker may provide the practitioner a visual aid in the replacement of a composite restoration and may protect against tooth structure loss.
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