Clinical evaluation of wedge-shaped defect restored by gingival retraction technique / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To evaluate the periodontal conditions after the wedge-shaped defect was restored by gingival retraction technique.</p><p><b>METHODS</b>A total of 138 mandibular premolars with wedge-shaped defect were selected and divided into A, B groups. Group A was restored with Dyract after using retraction cord. Group B was directly restored with Dyract. Clinical parameters including plaque index (PLI), gingival index (GI), sulcus bleeding index (SBI), probing depth (PD), volumes of gingival crevicular fluid (GCF) and levels of aspartate aminotransferases (AST) of gingival crevicular fluid were measured at baseline, 1 week, 1 month, 3 months and 6 months after operation.</p><p><b>RESULTS</b>There was no difference in PLI, GI, SBI, PD between group A and B during 6 months after operation, while the difference of GCF and AST was significant between group A and B at 3 months and 6 months after operation (P < 0.05, P < 0.01).</p><p><b>CONCLUSIONS</b>Gingival retraction technique applied in wedge-shaped defect restoration can reduce the damage to the periodontal tissue.</p>

Psychological comparison of patients with soft tissue injuries in oral and maxillofacial region by different kinds of suturing / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To evaluate the psychological situations of patients with soft tissue injuries in oral and maxillofacial region by different kinds of suturing.</p><p><b>METHODS</b>A total of 200 patients were selected and randomly divided into two groups. Group A received intradermic suture while group B underwent para-position suture. All patients were evaluated by hospital anxiety and depression (HAD) scales pre-suture, after one week, one month and three months.</p><p><b>RESULTS</b>The HAD total scores of group B were significantly high compared with group A (P < 0.05) after one week and one month, while there was no difference between group A and group B pre-suture and three months later.</p><p><b>CONCLUSIONS</b>Intradermic suture results in less psychological influence in patients with soft tissue injuries in oral and maxillofacial region.</p>