Anxiety and depression mediate the relationship between digestive tract conditions and oral health-related quality of life in orthodontic patients.

Background: Anxiety and depression are common psychological problems in orthodontic patients whose diet habits and oral health status change frequently during treatment. However, relationships between anxiety and depression, digestive tract condition, and impaired oral health-related quality of life remain unknown.

Materials And Methods: In this study, clinical assessments, including anxiety, depression, digestive tract condition, and oral health-related quality of life, were collected from 769 outpatients in the orthodontic department using three self-reported questionnaires.

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.

Cloning and Functional Analysis of Phosphoethanolamine Methyltransferase Promoter from Maize (Zea mays L.).

Betaine, a non-toxic osmoprotectant, is believed to accumulate considerably in plants under stress conditions to maintain the osmotic pressure and promote a variety of processes involved in growth and development. Phosphoethanolamine -methyltransferase (PEAMT), a key enzyme for betaine synthesis, is reported to be regulated by its upstream promoter. In the present investigation, by using the transgenic approach, a 1048 bp long promoter region of gene from was cloned and functionally characterized in tobacco.

Expression analysis of α-smooth muscle actin and tenascin-C in the periodontal ligament under orthodontic loading or in vitro culture.

α-smooth muscle actin (α-SMA) and tenascin-C are stress-induced phenotypic features of myofibroblasts. The expression levels of these two proteins closely correlate with the extracellular mechanical microenvironment. We investigated how the expression of α-SMA and tenascin-C was altered in the periodontal ligament (PDL) under orthodontic loading to indirectly reveal the intrinsic mechanical microenvironment in the PDL.

Effect of SOST gene deletion on the progression of renal interstitial fibrosis in obstructive kidney injury.

Objectives: The role of SOST/sclerostin in mediating tissue fibrogenic response to injury/inflammation remains largely unknown. Thus, we conducted this study to determine whether SOST/sclerostin plays a role in renal interstitial fibrosis (RIF) for the first time.

Methods: Unilateral ureteral obstruction (UUO) was performed to create obstructive kidney injury model.

[Orthodontic treatment of hyperdivergent skeletal Class II malocclusion].

Hyperdivergent skeletal Class II malocclusion has always been a challenge in orthodontics for both sagittal and vertical discrepancies. In recent years, many therapies had been proposed with varied mechanism and results. This article reviewed the clinical manifestation and pathological mechanism of hyperdivergent skeletal Class II malocclusion, as well as the effectiveness and key points of treatment for different therapies.

[The biological function of osteocytes].

Osteocytes are the most abundant and longest-surviving cells in bone tissue. Through cell synapses, osteocytes keep in contact with each other and with other types of cells on bone matrix surface, constituting a dynamic and active cell regulation network in bone homeostasis. Osteocytes can directly sense mechanical stimulus, translate it into biochemical signals and send to other cells.

Biofeedback treatment for sleep bruxism: a systematic review.

Purpose: The aim of this systematic review was to evaluate the efficacy of any biofeedback treatment on sleep bruxism.

Methods: We searched the Cochrane Central Register of Controlled Trials, MEDLINE, Embase, ISI Web of Science, System for Information on Grey Literature in Europe, Chinese Biomedical Literature Database, and PsycINFO up to October 2012 for randomized controlled trials and controlled clinical trials involving biofeedback treatment for sleep bruxism. Reference lists of relevant studies were hand searched.

[Effect of loop configuration on appliance stiffness of stainless steel round wire].

Objective: To investigate the effect of loop configuration on appliance stiffness of stainless steel round wire.

Methods: Some stainless steel round wires with various cross-sectional dimension (0.36, 0.

Expression of osteocalcin during surgically assisted rapid orthodontic tooth movement in beagle dogs.

Purpose: To investigate the expression of osteocalcin during rapid orthodontic tooth movement aided by alveolar surgery in beagle dogs.

Materials And Methods: Eight male beagles were used, and bilateral mandibular second premolars were extracted for distalization of the first premolars against the third premolars by orthodontic NiTi coil spring with a force of 100 gm. Right and left mandibular sides were randomly assigned to experimental and sham sides, and alveolar surgery was performed only on the experimental side to reduce the osteal resistance on the mesial side of the extraction socket.

[The properties of different orthodontic rectangular arch wires in torsion].

Objective: To study the properties of orthodontic rectangular arch wires in torsion.

Methods: By using the torsion measurement apparatus, torsion moments and angles of four kinds of orthodontic wires (0.46 mm x 0.

[Bending mechanical properties of NiTi round wire].

Objective: To investigate the bending mechanical properties and provide reference for orthodontists to select the proper wires during alignment stage.

Methods: In order to analyze the load deflection rate of NiTi round wire quantitatively, some NiTi round wires of different cross-sectional dimension (0.36, 0.

[Proliferation of myofibroblast in periodental tension side during orthodontic tooth movement of beagle dogs].

Objective: To examine the proliferation of myofibroblast in periodental tension side of beagle dog during experimental tooth movement in orthodontics.

Methods: By the fixed orthodontic appliance, the five beagles were treated with 100 g forces that moved medially the maxillary first premolar, and the treatment lasted for four weeks. Using transmission electron microscope and immunohistochemistry, the proliferation of myofibroblast and expression of alpha-smooth muscle actin (alpha-SMA) were evaluated at week 1, 2, 3, 4 or 8 respectively after the orthodontic treatment.