Objective: The present study aims at analyzing the shoulder dental preparation expected to provide space for making a crown which, following blunt application, should realize mutual protection ratios of the marginal periodontium, present a volume built in arch and establish functional relationships with the opposing teeth.
Methods: The study was done in the Military Hospital of Sibiu, on a total number of 51 patients, over a period of two years. The applied treatment consisted in fixed prostheses and shoulder and tangential tooth preparation.
Results: The incidence of periodontal reactions in tangential preparations was of 85%, compared to 15% in shoulder preparations. The most used type was the rounded narrow shoulder, in 50% cases, followed by the wide rounded one, in 40% of cases, and 10% – in tangential cases. The methods used for the eviction of gingival sulcus are: application of a cotton cord soaked in astringent solution – in 60% of cases, gingival rotary curettage – 30% of cases, and mixed techniques – 10% of cases.
Conclusions: The results obtained suggested that the dental health of periodontal tissues represents a crucial factor of therapeutic success, therefore shoulder tooth preparation is recommended.
- marginal periodontium
- mutual protection
- shoulder dental preparation
- tangential preparation