Effects of McLaughlin Bennett Treriri straight wire technique on the content of periostin in gingival crevicular fluid of the maxillary first molar / 中国基层医药

ABSTRACT

Objective:To investigate the effects of McLaughlin Bennett Treriri (MBT) straight wire technique on the content of periostin in gingival crevicular fluid of the maxillary first molar.Methods:Ninety patients with malocclusion who were treated with MBT straight wire technique in Jiaxing Hospital of Traditional Chinese Medicine from February to September 2021 were included in this study. The patients were divided into group A (13-18 years old) and group B (30-35 years old) according to age, with 45 patients in each group. According to the random number table method, patients in group A were divided into 100 g subgroup (group A1, n = 22) and 150 g subgroup (group A2, n = 23), and patients in group B were divided into 100 g subgroup (group B1, n = 22) and 150 g sub group (group B2, n = 23). Effects of age on the content of periostin in gingival crevicular fluid and bite force were observed. The antagonistic effect of periostin in gingival crevicular fluid during the application of different corrective forces was evaluated based on the changes in bite force, bone mineral density and height of the jaw after the application of force. The incidence of complications was calculated. Results:The level of periostin and bite force in group A were (1 249.38 ± 89.29) pmol/L and (1 038.37 ± 79.54) N, respectively, which were significantly higher than (831.54 ± 76.38) pmol /L and (921.45 ± 81.36) N in group B ( t = 23.86, 6.89, both P < 0.05). After 1 and 3 months of treatment, the amplitude of improvement in bite force, jaw bone density, and jaw height in group A2 were greater than those in group A2 ( t = 2.92, 6.39, 0.64, 1.30, 1.07, 2.48, all P < 0.05). After 7 and 14 days of treatment, the level of periostin was increased in both group B1 and B2 and its level in group B2 was significantly higher than that in group B1 ( t = 0.59, 1.89, both P < 0.05). After 1 month of treatment, there were no significant differences in bite force, jaw bone density and jaw height between groups B1 and B2 (all P > 0.05). After 3 months of treatment, the amplitude of improvement in bite force, jaw bone density and jaw height were greater in group B2 than those in group B1 ( t = 0.27, 4.02, 3.07, 1.52, 0.06, 1.57, P < 0.05). There were 3 patients with loose teeth, 2 patients with pulp reaction, 1 patient with mucosal ulcer, and 2 patients with secondary dental caries during treatment. The incidence of complications was 8.89%. Conclusion:MBT straight wire technique is effective and safe in the treatment of patients with dental deformities. The level of periostin in gingival crevicular fluid of the maxillary first molar and bite force decrease with age. The corrective force can increase and activate the expression of periostin, thereby promoting periodontal wound healing and regeneration, and increasing patients' bite force, jaw bone density and height.