Outcome of regenerative endodontic procedures in delayed replanted immature permanent teeth with apical periodontitis: A retrospective study.

Background: Regenerative endodontic procedures (REPs) is effective for treating young permanent teeth with pulp necrosis. However, its efficacy on delayed replanted avulsed teeth is unclear.

Aim: This retrospective study aimed to assess the efficacy of REPs in treating delayed replanted immature permanent teeth with apical periodontitis.

[A survey of parents' cognition about orofacial myofunctional therapy in children with orofacial muscle dysfunction].

Purpose: To investigate the difference of parent's cognition of children's orofacial myofunctional therapy (OMT) and its influencing factors, to provide reference for children's OMT.

Methods: Self-designed questionnaire was used to investigate the basic information and related problems of 98 parents whose children received OMT. SPSS 22.

[Short-term prognosis of laterally luxated primary teeth left without treatment: a retrospective study of 45 consecutive cases].

Purpose: To study the clinical prognosis of laterally luxated primary teeth after 6-month follow-up without treatment.

Methods: Patients with laterally luxated primary teeth, visiting Department of Pediatric Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine from March 2018 to March 2019, were selected for the study. Based on the inclusion and exclusion criteria, totally 45 patients with 57 primary teeth were included.

[Radiographic study of the age for crown and root length completion stages of permanent teeth in male and female children].

Purpose: To determine the age medians for crown and root length completion stages of permanent teeth (except for the third molars) and to study gender differences in crown and root length completion stages by radiographic examinations.

Methods: The development of permanent teeth (except for the third molars) was evaluated from 3304 panoramic radiographs of children aged between 3 and 18 years by Haavikko's method. Statistical analysis was performed using SPSS 25.

[Effect of caries treatment under general anesthesia on oral health behavior and growth development of children in short term].

Purpose: To study changes of children caries activity after treatment under general anesthesia, and to analyze effect of caries treatment under general anesthesia on oral health behavior and growth index of children.

Methods: Patients who met criteria and were treated under general anesthesia were included in this study. Informed consent for this study was obtained from parents.

[Effect of impact direction on the cushion property of mouthguards: a finite element analysis].

Purpose: The aim of this study was to evaluate the cushion property of mouthguards when the impact object came from different directions.

Methods: A 3D finite element model of upper central incisor, periodontal ligament and alveolar bone was developed based on cone-beam CT (CBCT) images of a plastic teeth model. The mouthguards were modeled in 5 different thickness (T: 0, 1.

An in vitro study on the secondary caries-prevention properties of three restorative materials.

Statement Of Problem: Secondary caries is considered to be the most important and common reason for the replacement of all types of restorations.

Purpose: The purpose of the study was to evaluate in vitro both the anticaries efficacy and marginal integrity of amalgam, glass ionomer cement, and composite resin restorations in a cariogenic condition.

Material And Methods: Class II cavities were prepared on 60 extracted teeth, which were assigned to 3 groups and restored either with amalgam, glass ionomer, or composite resin.

The microfloral analysis of secondary caries biofilm around Class I and Class II composite and amalgam fillings.

Background: Secondary caries is responsible for 60 percent of all replacement restorations in the typical dental practice. The diversity of the bacterial sources and the different types of filling materials could play a role in secondary caries. The aim of this study was to determine and compare the microbial spectrum of secondary caries biofilms around amalgam and composite resin restorations.

Effect of a dentifrice containing the peptide of streptococcal antigen I/II on the adherence of mutans streptococcus.

Objective: Antigen I/II of mutans streptococcus (MS) is a surface protein, which binds to salivary receptors. The objective of this study was to study the effect of a peptide corresponding to residues 1025-1044 of antigen I/II and a dentifrice containing peptide on the adherence of MS.

Methods: The peptide was synthesized and included into dentifrice.