Clinical comparative study on the efficacy of periodontal endodontic therapy and periodontal treatment alone for advanced periodontitis / 华西口腔医学杂志

<p><b>OBJECTIVE</b>This study aimed to explore the period of endodontic treatment and the effects of periodontal-endodontic treatment for advanced periodontitis.</p><p><b>METHODS</b>A total of 180 patients with advanced periodontitis participated in this clinical multicenter study. The respondents were randomly divided into an endodontic combined treatment (experimental) group and a periodontal treatment alone (control) group; each group consisted of 90 teeth. The control group received periodontal therapy only. The experimental group received periodontal therapy and root-canal treatment, and then pulp status was recorded. The cases were followed up at 1, 3, 6, and 12 months after treatment.</p><p><b>RESULTS</b>Out of 90 teeth in the test group, 22 teeth had completely necrotic pulps, 45 teeth had partial necrosis (coronal pulp necrosis or root pulp necrosis), and 23 had vital pulp. Differences between clinical parameters in the control and experimental groups were not significant (P>0.05) before treatment but were significant after three months (P<0.05).</p><p><b>CONCLUSIONS</b>Pulp treatment for teeth with advanced periodontitis and dull pulp vitality can control the development of inflammation and thus benefit the healing of periodontal tissue.</p>

Clinical analysis of gum bleeding caused by acquired factor XIII deficiency disease / 实用口腔医学杂志

Acquired factor XIII deficiency disease is rare.One case with gum bleeding as the first symptom caused by acquired factor XIII de-ficiency disease was encountered.The case was analyzed and relevant literatures were reviewed.

The clinical effect of root amputation in the treatment of periodontal/alveolar abscess / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To study the clinical effect of root amputation in the treatment of periodontal/alveolar abscess teeth with one severe lesion root.</p><p><b>METHODS</b>30 periodontal/alveolar abscess teeth with one severe lesion root were chosen in the study. After root canal treatment, supragingival scaling, subgingival scaling and root planning, occlusal adjustment were done. Then the teeth were treated by root amputation. The clinical effect was evaluated 3 months, 6 months and 1 year after surgery.</p><p><b>RESULTS</b>One year after surgery, 27 of 30 teeth were successful, 1 mandibular molar occurred root fracture, 1 mandibular molar was removed because of tooth loosening secondary to periodontal damage. 1 patient lost.</p><p><b>CONCLUSION</b>Root amputation is an effective solution of periodontal/alveolar abscess.</p>

Preparation of oral composite chitosan film and its effect on experimental oral ulcer / 实用口腔医学杂志

Objective: To develop a type of oral biofilm to treat ora l ulcer.Methods:Chitosan film was prepared with chitosan only,comp osite chitosan film was prepared with chitosan(7 mg/cm 2),aloe (51 mg/cm 2),di caine(0.55 mg/cm 2) and EGF(40 IU/cm 2).Oral ulcer was made by local applicati on of crystal NaOH in 90 SD rats. The rats were divided into 3 groups with 30 in each. The oral ulcer in each group was treated by chitosan film(group C), compo site chitosan film(group CC) or without treatment(control). The ulcer healing wa s obsered by naked eye and examined pathologically. Results:The average healing time(d) of the ulcer in the groups of C,CC and control was 6.2 5 ? 1.29 ,5.58?1.3 and 8.75?2.49 respectively (C or CC vs Control P0.05). 2 days after treatment higher PCNA expression was observ ed in group CC than that in control(P