Solitary Myofibroma of the oral and maxillofacial regions in pediatric patients: A clinicopathological analysis of ten patients and review of 75 cases.

Background: The imaging manifestations of oral and maxillofacial myofibroma/myofibromatosis can vary among patients. Although many clinical cases have been reported, a consensus on the clinicopathological features of and treatment principles for this disease is lacking.

Purpose: This study aimed to summarize the clinicopathological features of solitary myofibroma of the oral and maxillofacial regions in pediatric patients.

Analysis of 256 pediatric oral and maxillofacial emergency in-patients during the outbreak of COVID-19.

Background/aims: Pediatric oral and maxillofacial surgeons have faced severe challenges in ward management due to their high risk of exposure during the COVID-19 epidemic. The aim of this study was to analyze and summarize the treatment methods and infection prevention and control measures applied in emergency cases in the Department of Pediatric Oral and Maxillofacial Surgery, Children's Hospital of Chongqing Medical University, during the COVID-19 epidemic.

Methods: In this retrospective study, information was collected from 256 pediatric emergency patients who were treated from January 23, 2020 to August 9, 2021.

[Diagnosis and treatment of congenital submandibular duct dilatation].

Objective: To study the clinical features and treatments of congenital submandibular duct dilatation.

Methods: Seven children with congenital submandibular duct dilatation from January 2008 to March 2018 were included in this study, whose average age was 5 months and 22 days. The clinical manifestations are unilateral swelling of the mouth floor.

[Study on the in vitro effects of dexamethasone at different concentrations on the growth of murine embryonic palatal mesenchymal cell].

Objective: To observe the effect of dexamethasone on the proliferation and apoptosis of embryonic palatal mesenchymal (EPM) cells, and chose a proper concentration of dexamethasone which can effect the ordinary growth of embryonic palatal mesenchymal cells.

Methods: The primary EPM cells were isolated and cultured in vitro, then we did biological assay. EPM cells were treated with different concentration dexamethasone (1 x 10(-9), 1 x 10(-8), 1 x 10(-7) and 1 x 10(-6) mol x L(-1)) respectively.

A comparative study of fluctuating asymmetry in Chinese families with nonsyndromic cleft palate.

Objective: To compare the asymmetry displayed by Chinese patients with nonsyndromic cleft palate (NSCP), their unaffected parents, and a control population.

Method: With rigorous inclusion criteria, a total number of 675 individuals with NSCP, 675 parental pairs of these patients, and 650 control individuals were involved in this case-control study. Size-adjusted fluctuating asymmetry (FA) scores were calculated by data on 10 variables.

Animal experimental study on repairing alveolar clefts by using rectilinear distraction osteogenesis.

The aim of this study was to evaluate the clinical applicability of rectilinear distraction osteogenesis for repairing alveolar cleft models. Alveolar process distraction surgery to produce bilateral clefts was performed on six adult cats. In our study, the left side with the distraction device was the experimental side, and the other side without a distraction device was the control side.

Effects of different types of palatal lateral excisions on growth and development of maxilla and dental arch.

Objective: This study aimed to explore the effects of different types of palatal lateral excisions on the growth and development of the maxilla and dental arch, and to investigate the underlying mechanisms.

Methods: A total of 112 3-week-old Sprague-Dawley (SD) male rats were randomly divided into a control and 3 experimental groups: the mucoperiosteal denudation group, the mucosal flap excision group, and the periosteum excision group. In the experimental groups, bilateral mucoperiosteal, mucosal flap and periosteum were excised respectively in the lateral one half of the palate.