[Comparison of two types of T-shaped coronectomy applied in extraction of impacted mandibular third molars].

PURPOSE: To compare the clinical efficiency of two types of T-shaped coronectomy applied in extraction of impacted mandibular third molars. METHODS：One hundred and twenty patients meeting with the criteria were randomly divided into 2 groups. Two types of T-shaped coronectomy were applied in extraction of impacted mandibular third molars. Indexes including operation time, intraoperative anxiety, postoperative pain and limitation of mouth opening were recorded and analyzed with SPSS 22.0 software package. RESULTS: Patients with transverse method experienced more time in operation [(17.41±3.72) vs (15.22±2.53) min], with less intraoperative anxiety (P<0.05). There was no significant difference in postoperative pain and limitation of mouth opening(P>0.05) between two methods. CONCLUSIONS: Transverse T-shaped method can alleviate intraoperative anxiety, while longitudinal method is more conducive to shortening operation time.

Adverse Events at Baseline in a Chinese General Hospital: A Pilot Study of the Global Trigger Tool.

OBJECTIVE: To investigate adverse events (AEs) at baseline in a Chinese general hospital using the Institute for Healthcare Improvement (IHI) Global Trigger Tool (GTT) and discuss the feasibility of this tool to detect AEs in China. METHODS: A total of 10 inpatient records from the hospital were sampled randomly half a month in 2014. The records were reviewed to identify AEs according to the second edition of the IHI GTT for measuring AEs. Triggers and AEs were analyzed using Microsoft Excel 2007. Statistical analyses were performed using IBM SPSS software, version 19.0. RESULTS: A review of 240 patient records identified 51.0% (26/51) triggers in the worksheet, and 33.3% (17/51) were associated with AEs. A total of 70 AEs were identified in 54 patients, including 65.7% (46/70) category E AEs, which represent temporary harm requiring intervention, and 34.3% (24/70) category F AEs, which represent temporary harm requiring initial or prolonged hospitalization. The average rate of AEs per 1000 patient-days was 32.1 ± 20.9. The average rate of AEs per 100 admissions was 29.2 ± 16.1. The average rate of admissions with an AE was 22.5% ± 13.9%. The most significant characteristic of patients with AEs was longer hospital stay. CONCLUSIONS: More than one fifth of adult inpatients in the current study experienced at least one AE resulting in temporary harm, most commonly caused by surgical operations and medication. With some modifications, the IHI GTT is a feasible and effective tool for detecting the overall status of AEs in a Chinese hospital.

[Diagonal root separation method for extracting impacted double-root mandibular third molars].

Double-root mandibular third molars are the common types of mandibular third molars that are prone to impac-tion. Based on the summary of clinical cases and experience, the commonly used crown-root separation technique is improved as diagonal root separation technique that divides the roots by the line connecting the distal axis angle to the root furcation. This new method improves the efficiency of the operation and reduces surgical trauma. This paper details the surgical method, minimally invasive mechanics, and key points of this technique, compares the technique with the crown-root separation tech-nique, and discusses their joint applications.