Orthodontic treatment need in a representative adult cohort.

Background And Objective: There is currently no representative information for central Germany on the prevalence of dental malalignments and jaw discrepancies in permanent dentition. The aim of this study was to describe the extent of tooth and jaw malformations in a representative adult population according to conventional orthodontic indices.

Subjects And Methods: Three dimensionally (3D)-oriented study casts were measured from a representative sample of adults from the Halle and Leipzig urban areas consisting of 102 men and 143 women aged between 18 and 39 years, yielding a total of 245 volunteers.

Assessment of quality of life in patients undergoing orthognathic surgery.

Clinical Question: Analysis to date on the impact of a pronounced skeletal dentofacial deformity on quality of life remains inadequate.

Objective: The objective of this study was to introduce a validated and internationally comparable questionnaire for the assessment of quality of life, and to use this questionnaire in a consecutively-selected patient cohort.

Material And Methods: The Orthognathic Quality of Life Questionnaire (OQLQ) used internationally was translated into German and adapted in accordance with EU guidelines (OQLQ-G).

Fracture strength of different soldered and welded orthodontic joining configurations with and without filling material.

The aim of this study was to compare the mechanical strength of different joints made by conventional brazing, TIG and laser welding with and without filling material. Five standardized joining configurations of orthodontic wire in spring hard quality were used: round, cross, 3 mm length, 9 mm length and 7 mm to orthodontic band. The joints were made by five different methods: brazing, tungsten inert gas (TIG) and laser welding with and without filling material.

The influence of different disinfectants on primary impression materials.

Objective: To investigate the dimensional changes and the surface quality of dental impression materials after disinfection with 3 chemically different agents.

Method And Materials: Four alginate impression materials and 1 addition silicone material were selected. The impressions were made from a brass model simulating a 3-unit fixed partial denture.

Influence of different brazing and welding methods on tensile strength and microhardness of orthodontic stainless steel wire.

The aim of this study was to compare the mechanical strength and microhardness of joints made by conventional brazing and tungsten inert gas (TIG) and laser welding. A standardized end-to-end joint configuration of the orthodontic wire material in spring hard quality was used. The joints were made using five different methods: brazing (soldering > 450 degrees C) with universal silver solder, two TIG, and two laser welders.

Reliability of the Beighton Hypermobility Index to determinate the general joint laxity performed by dentists.

Unlabelled: The findings in the literature concerning an association between general joint laxity (GJL) and temporomandibular disorders (TMDs) are inconsistent. Both differences in study designs and the lack of information about the precision of GJL measurements may be contributing to this inconsistency.

Aim: The aim of this study was thus to investigate the reliability (the inter-rater and intra-rater test-retest reliability and internal consistency) of GJL measurements taken by dentists in a general dental practice setting.

The importance of temporomandibular function for patient satisfaction following orthognathic surgery.

Aim: From the patient's point of view, the main reasons for undertaking orthognathic surgical treatment are esthetic improvements in dentofacial appearance. The aim of this study was to analyze various factors that influence patient satisfaction regarding treatment results.

Patients And Methods: A total of 102 (f = 67, m = 35) patients were examined after an average follow-up of 47 months.

Evaluation of vertical parameters in cephalometry.

Aim: The aim of this study was to determine the validity of different vertical parameters in cephalometry.

Materials And Methods: The cephalograms of 94 patients were used in this study. The inclusion criteria were as follows: skeletal Class I, completion of maximum skeletal growth, and no history of orthodontic therapy.

Classification of anterior open bite using individualized cephalometry.

Objective: The objective of this study was to describe the cephalometric characteristics of the open bite, and to classify the open bite according to individualized norms.

Material And Method: The lateral cephalograms of 134 patients with an anterior open bite (min -0.5 mm) were analyzed.

Possibilities and limitations of comprehensive treatment of mentally retarded patients with cleft lip, alveolus and palate.

The comprehensive, successful treatment of patients with cleft lip, alveolus and palate requires numerous surgical interventions and very close cooperation between various medical and dental specialists. The willingness and ability of the patient to undergo treatment are undoubtedly important factors in achieving optimal treatment outcomes. The presented case report shows that limited compliance makes it much more difficult for speech pathologists and orthodontists to treat mentally retarded patients.