Assessment of the occurrence of apical periodontitis and endodontically treated/non-treated teeth in a Lower Austrian patient population treated for osteoporosis: a cohort study.

Introduction: Osteoporosis (OP) is a bone disease linked to low bone mass and heightened fracture risk. Apical periodontitis (AP) is an inflammation of the apical periodontium, visible on radiographs, often associated with infection or necrosis of the root canal system. Both conditions, AP and OP, share inflammation and ageing as common factors, warranting exploration of their potential interactions.

Comparison of parental and practitioner's acceptance for dental treatment under general anaesthesia in paediatric patients.

Background: Practitioner's knowledge and parental perspectives on dental general anaesthesia (GA) have been surveyed separately in the past. But in daily routine both need to collaborate for the benefit of the child. The aim of this paper was to compare parental and practitioner's acceptance of GA with special focus on identifying factors which influence their differences in decision making.

Country and gender differences in the motivation of dental students-An international comparison.

Purpose: The objective of this study, conducted in Germany, Finland and Turkey, was to identify whether motivations to study dentistry varied by country, gender or year of study.

Methods: The multicentre pilot study was conducted in English language in 2014. Participants (n = 469 dental students) were either in the first or last year of study.

Characterisation of apical bone lesions: Comparison of MRI and CBCT with histological findings - a case series.

Purpose: The aim of this case series was to compare magnetic resonance imaging (MRI) with cone beam computed tomography (CBCT) in the representation of periapical osteolyses. Based on the histological findings, the potential of MRI for further lesion characterisation was investigated.

Materials And Methods: Thirteen patients (average age: 41 ± 27 years) with a total of 15 periapical lesions (five molars, five premolars, and five front teeth) were examined.

Radiographic diagnosis of proximal caries-influence of experience and gender of the dental staff.

Objectives: The aim of this study was to examine the influence of experience and gender on the radiographic detection of proximal caries lesions and on therapeutic decisions.

Materials And Methods: A survey of 220 examiners (students and employees at three universities and dentists in the field) was taken using a standardized written questionnaire concerning radiographic diagnosis and therapy planning. An expert opinion of four dentists was determined as radiographic reference.

A self-gating method for time-resolved imaging of nonuniform motion.

Purpose: To develop a self-gating method capable of assessing nonuniform motion, e.g., in cardiovascular magnetic resonance imaging of patients with severe arrhythmia, or for imaging of the temporomandibular joint.

Golden ratio sparse MRI using tiny golden angles.

Purpose: The combination of fully balanced SSFP sequences with iterative golden angle radial sparse parallel (iGRASP) MRI leads to strong image artifacts due to eddy currents caused by the large angular increment of the golden angle ordering. The purpose of this work is to enable the combination of iterative golden angle radial sparse parallel MRI with balanced SSFP using the recently presented tiny golden angles.

Methods: The tiny golden angle trajectories are analyzed for their incoherence properties in relation to sparse imaging using the time-resolved point-spread functions.

Comparative analysis of intraoral radiographs with variation of tube angulation to detect insufficient crown margins.

Variations in angulation of the x-ray tube affect the appearance of insufficient approximal crown margins on intraoral radiographs. This study examines the impact of such angular variation on the assessment of digital radiographs using three different X-ray tubes--Heliodent DS (Sirona), Gendex Expert DC (KaVo Dental) and Focus (KaVo Dental)--as well as the Gendex Visualix eHD CCD sensor (KaVo Dental). The test specimens, crowned teeth 46 from two mandibles provided by the Institute of Anatomy and Cell Biology, were examined with each tube.

Polymerase chain reaction-based simultaneous detection of selected bacterial species associated with closed periapical lesions.

Purpose: The aim of this study was to identify microorganisms which might be present in closed periapical lesions and to determine their relationship to conventional clinical parameters. -

Methods: In 11 patients, samples were taken with paper points from 14 teeth with periapical radiolucency, in seven cases two samples were taken from two different sites of the same tooth (n=21). Clinical parameters were determined.