China experts' consensus on preventive and interceptive orthodontic treatments of malocclusions of children.

Malocclusion is one of the three most common oral diseases reported by World Health Organization(WHO). In China, its incidence rate is rising. Malocclusion seriously affects the dental and maxillofacial function, facial appearance and growth development of nearly 260 million children in China, and what is more, it affects their physical and mental health development.

A population-based analysis of adenosquamous carcinoma of the salivary gland.

Background: Adenosquamous carcinoma (ASC) of the salivary gland is a rare malignancy, and the characteristics and prognosis of this disease remain unclear. This study aimed to assess the clinicopathological characteristics of this rare disease and further determine the potential prognostic factors that affect its outcome.

Methods: Data of patients with ASC of the salivary gland were extracted retrospectively from the Surveillance, Epidemiology, and End Results (SEER) database between 1973 and 2016.

[Removable appliance and closed of central incisors: report of 48 cases].

Purpose: To evaluate the treatment effect of orthodontic traction on embedded and inverted maxillary bending central incisors.

Methods: Fifty-two embedded and inverted maxillary central incisors without-eruption ability in 48 cases were treated by combined orthodontic traction with surgical treatment after spiral CT positioning and expanding the space, the eruption situation, gingival-breaking time and teeth pulp vitality after treatment were recorded, and the treatment effect was evaluated.

Results: Forty-eight cases with 52 impacted upper central incisors were treated with surgical and closed orthodontic traction, successful results were achieved in 36 cases, accounting for 69.