[Changes of dental emergency cases in the first half from 2017 to 2020 in Shanghai Ninth People's Hospital].

Purpose: This study aimed to summarize and analyze dental emergence data and compare with the same period from 2017 to the first half of 2020, to provide a basis for improving the quality of dental emergency care and formulating rational allocation.

Methods: A total dental emergency cases from 2017 to the first half of 2020 were collected, statistical analysis was carried out according to patients' sex and age, chief complaints and diagnosis with SPSS 18.0 software package.

[Effect of pulsed dye laser on inhibiting early scar after maxillofacial trauma].

Purpose: The study was designed to explore an effective method to control early scar after maxillofacial trauma and improve the satisfaction of clinical treatment.

Methods: Fifty skin lesions after maxillofacial trauma were divided into the experimental group and control group. Patients in the experimental group were treated with pulsed dye laser when taking out stitches, 15, 30 and 60 days later.