Abstract:

Objective

To evaluate the effect of distal wedge procedure and restoration procedure on the second molar with low occlusogingival distance.

Methods

Thirty second molars with low occlusogingival distance were involved in this study. Excluding surgical contraindications， distal wedge procedure was performed to remove redundant gingival tissue and even some alveolar bone. 4 to 6 weeks later， the permanent prosthesis was individually prepared. Distal crown length and sulcus bleeding index （SBI） were recorded at the time when permanent restoration was finished， follow-up 6 months and 12 months.

Results

After distal wedge procedure， the second molars obtained enough distal occlusogingival distance for crown preparation. Postoperative periodontal index remained relatively stable in twelve-month observation. The retention of the crown was good， and the gingival margin kept relatively stable （F=1.279，P=0.284）. No complication was observed. SBI of the experimental teeth had no significant difference compared with that of the control group at different period respectively （t₀=2.283，P₀=0.534；t₆=-0.767，P₆=0.722；t₁₂=2.129，P₁₂=0.263）.

Conclusion

Application of distal wedge procedure might be an effective and practicable way for the second molar with low occlusogingival distance to gain more restoration space.

Key words: Second molar, Lower occlusogingival distance, Distal wedge procedure, Restoration