Evaluation of Implant Impression Accuracy Using Different Trays and Techniques with a 3D Superimposition Method.

Purpose: To evaluate the dimensional accuracy of implant impressions obtained using five different tray types and two techniques.

Materials And Methods: A partially dentate maxillary Kennedy Class II model was created as a reference model through 3D printing. Then, implant analogs 4.

High-resolution diffusion-weighted imaging compared with conventional diffusion-weighted imaging and dynamic contrast-enhanced magnetic resonance imaging with regard to image quality and assessment of breast cancer morphology.

Purpose: To evaluate the image quality and tumor morphology depiction ability of high resolution (HR) diffusion- weighted imaging (f-DWI) in comparison to conventional DWI (c-DWI) and dynamic contrast- enhanced magnetic resonance imaging (DCE-MRI) in the primary breast cancer setting.

Methods: The f-DWI, c-DWI, and DCE-MRIs of 160 malignant breast masses were evaluated retrospectively by two independent radiologists. Data on image quality [sharpness, distortion, and perceived signalto- noise ratio (SNR)], apparent diffusion coefficient (ADC) value, lesion size, and tumor morphology (shape, margin, and internal pattern) obtained on f-DWI, c-DWI, and DCE-MRI were compared.

Comparative evaluation of stress distribution and transverse displacement of novel designs of miniplates for sagittal split ramus osteotomy in 10 mm advancements: a finite element analysis.

The aim of this study was to evaluate the stress distribution and displacement values of six different miniplate systems in large mandibular advancement after sagittal split ramus osteotomy (SSRO) with finite element analysis (FEA). A three-dimensional model of a mandible was created and a 10 mm advancement SSRO was simulated. The model was fixed using a four-hole miniplate, a six-hole miniplate, a newly designed six-hole miniplate and their curved versions.

Reverse Forsus vs. facemask/rapid palatal expansion appliances in growing subjects with mild class III malocclusions : A randomized controlled clinical study.

Purpose: To investigate the skeletal, dental, and soft tissue effects of reverse Forsus (RF; 3M Unitek, Monrovia, CA, USA) and facemask/rapid palatal expansion (FM/RPE) appliances in growing subjects with class III malocclusions.

Methods: The data of this prospective randomized controlled trial (RCT) were derived from pre- and posttreatment/observation lateral cephalograms of 45 subjects with mild class III malocclusions: group 1 (8 girls, 7 boys; mean age 10.54 years) received a FM/RPE appliance; group 2 (6 girls, 9 boys; mean age 10.

Accelerated Calcium Phosphate Mineralization by Peptides with Adjacent Oppositely Charged Residues.

Calcium phosphate mineralizing peptides are of special importance for dental and orthopedic applications, such as caries remineralization and improved osteointegration. Uncovering the mechanism of action for such peptides is an ongoing challenge with the aim of a better fundamental understanding of biomineralization processes and developing optimized peptides for clinical use. It has recently been reported that "adjacent oppositely charged residue" motifs are found abundantly in cation binding, inorganic surface binding, or biomineralization-related proteins and may play a key role in the biomineralization events.

A comparison study of dual-energy spectral CT and 18F-FDG PET/CT in primary tumors and lymph nodes of lung cancer.

Purpose: We aimed to investigate whether there is a correlation between dual-energy spectral computed tomography (DESCT) and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) parameters in primary tumor and metastatic lymph nodes in patients with newly diagnosed lung cancer.

Methods: Primary tumor and metastatic lymph nodes of 68 patients diagnosed with lung cancer were evaluated retrospectively with 18F-FDG PET/CT and DESCT imaging. The histologic subtypes were adenocarcinoma (n=29), squamous cell carcinoma (SCC) (n=26), small cell lung cancer (SCLC) (n=11), and large cell neuroendocrine cancer (LCNEC) (n=2).

Aetiological Evaluation of Oligodontia in a Three-Generation Family.

Purpose: The aim of this study was to assess the genetic evaluation of a three-generation consanguineous family with isolated oligodontia.

Materials And Methods: A 16-year-old male patient who had been referred for orthodontic treatment due to the presence of oligodontia, and his family members who presented several missing teeth had been enrolled in the study. Clinical and radiological assessments and genetic analysis including whole-exome sequencing were performed.

Effect of cortical bone thickness and density on pullout strength of mini-implants: An experimental study.

Introduction: Anchorage, which is defined as resistance against undesired tooth movements, is one of the most important factors in success of orthodontic treatment. In recent years, mini-implants have been used instead of uncomfortable headgears and Nance appliances. The pullout test is the most common method for measuring the anchorage capacity of mini-implants.

Salivary opiorphin in dental pain: A potential biomarker for dental disease.

Objectives: Opiorphin is a recently discovered peptide shown to inhibit the enkephalin-degrading enzymes and prolong the effects of enkephalins. Although opiorphin is found in high concentrations in saliva, the relationship between salivary opiorphin and orofacial pains is not yet fully understood. We aimed to determine salivary opiorphin concentrations in dental pain related to symptomatic irreversible pulpitis (SIP), and symptomatic apical periodontitis (SAP).

Effects of modified and conventional facemask therapies with expansion on dynamic measurement of natural head position in Class III patients.

Introduction: The aim of this prospective clinical trial was to assess the effects of varying force directions on the dynamic measurement of natural head position and orofacial airway dimensions of Class III patients during maxillary orthopedic protraction compared with an untreated control group.

Methods: The conventional facemask group comprised 15 patients (8 girls, 7 boys; mean age, 9.6 ± 1.

Rapid maxillary expansion effects on dynamic measurement of natural head position.

Objective: To identify the effect of rapid maxillary expansion (RME) procedure on dynamic measurement of natural head position (NHP).

Materials And Methods: The treatment group comprised 23 patients, 12 girls and 11 boys (mean age: 10.1 ± 1.

Influence of lower facial height changes on frontal facial attractiveness and perception of treatment need by lay people.

Objective: To test the hypothesis that lower facial height has no influence on frontal facial attractiveness and treatment need perception of lay people.

Materials And Methods: Frontal facial silhouettes of a man and a woman with normal lower facial height values (male: 81.5 mm; female: 70.

Relationship between static natural head position and head position measured during walking.

Introduction: The aim of this project was to determine whether there is a statistically significant difference between the means of static and dynamic (measured during walking) measurements of head posture.

Methods: The sample consisted of 50 subjects, 25 women and 25 men, 20 to 25 years of age. None had a history of orthodontic treatment, head or neck injury, or nasal breathing problems, and none wore eyeglasses to correct vision.

Effect of cervical headgear wear on dynamic measurement of head position.

The aim of this study was to identify the effect of cervical headgear (CHG) wear on dynamic measurement of head posture during walking. Six male and 10 female patients (mean age, 11.9 +/- 1.

Effect of rapid maxillary expansion on nocturnal enuresis.

One of the effects of rapid maxillary expansion (RME) is a reduction in nighttime bed-wetting. The aim of this prospective study was to investigate the effects of RME on nocturnal enuresis (NE) in children who are liable to psychosocial stress conditions. Eight children (six boys and two girls) who had not responded to different conventional medical treatments were included in the study.

Effect of complete dentures on dynamic measurement of changing head position: A pilot study.

Statement Of Problem: Complete dentures contribute significantly to the facial esthetics of edentulous patients. However, information as to the effect of complete dentures on the natural position of the head is limited.

Purpose: The purpose of this pilot study was to evaluate the immediate and 30-day effect of wearing complete dentures on the dynamic natural head position measured during walking.

Mandibular symphyseal distraction and its geometrical evaluation: report of a case.

In this report, the case of a patient who has been treated with a different use of a tooth-borne custom-made mandibular symphyseal distraction device is presented. The difference in the application is that the distal arm of the device was sectioned during the retention phase to allow the possible relapse of displaced condyles to their original positions while the labial segment expansion is being maintained. The effect of this procedure was also evaluated on a geometrical model using measurements from the patient's cast.

Reproducibility of natural head position measured with an inclinometer.

Sagittal (pitch) and transversal (roll) natural head position (NHP) was measured once in 20 subjects, 18 to 24 years of age, with an inclinometer; the measurements were repeated 2 years later. The method error (reproducibility) after 2 years was 1.1 degrees for sagittal and transversal measurements.

Laser etching of enamel for direct bonding with an Er,Cr:YSGG hydrokinetic laser system.

Irradiation of enamel with laser energy changes the physical and chemical characteristics of the enamel surface, and these alterations hold promise for the conditioning of enamel for bonding procedures. This laboratory study examined the influence of laser irradiation of enamel at 2 different power settings with an erbium, chromium: yttrium, scandium, gallium, garnet (Er,Cr:YSGG) hydrokinetic laser system (Millennium System, Biolase Technology, Inc; San Clemente, Calif) on the shear bond strength of orthodontic appliances and compared these with that of acid-etching. The prepared surfaces of 40 noncarious, intact, extracted premolars were exposed to laser energy: 20 teeth at 2-W setting (5.