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Spot-Bonding and Full-Bonding Techniques for Fiber Reinforced Composite (FRC) and Metallic Retainers
Fiber reinforced Composite (FRC) retainers have been introduced as an aesthetic alternative to conventional metallic splints, but present high rigidity. The purpose of the present investigation was to evaluate bending and ...
Occlusal traits and orthodontic treatment need in 7- to 10-year-olds in Estonia
The aim of this study was to evaluate the distribution of occlusal traits and orthodontic treatment need and complexity in Estonian 7-to 10-year-old children. This data provides solid information for planning of orthodontic ...
Effect of Long-Term Brushing on Deflection, Maximum Load, and Wear of Stainless Steel Wires and Conventional and Spot Bonded Fiber-Reinforced Composites
Fiber-reinforced composite (FRC) retainers are an aesthetic alternative to conventional Stainless Steel splints. They are generally used with a full bonded technique, but some studies demonstrated that they could be managed ...
A longitudinal study of changes in psychosocial well-being during orthognathic treatment
<p>The aim was to evaluate changes in the psychosocial well-being of orthognathic surgery patients (n = 22) during treatment and to compare results with those of adults not requiring orthognathic treatment (n = 22). Patient data were collected before treatment (T0), after the first orthodontic examination (T1), three times during treatment (T2–T4), and 1 year after surgery (T5). In this article, only data corresponding to patient stage T5 are reported for the control subjects. Participants filled in a structured diary and the modified version of the Secord and Jourard body image questionnaire, the Orthognathic Quality of Life Questionnaire, the Rosenberg Self-Esteem Scale, and the Acceptance and Action Questionnaire II. Moreover, patients filled in the Symptom Checklist-90. After the placement of orthodontic appliances (T2), orthognathic quality of life, self-esteem, and psychological flexibility were lower and psychiatric symptoms increased. Improvements were observed from T2 to T5 in orthognathic quality of life, body image, self-esteem, psychological flexibility, and psychiatric symptoms. Treatment resulted in improvements from T0 to T5 in orthognathic quality of life, body image, and psychiatric symptoms. At T5, patient psychosocial well-being was comparable to or even better than that of control subjects. Orthognathic treatment seems to support psychological well-being, but the range of individual variation is wide.<br /></p>...
Parent's self-reported tooth brushing and use of fluoridated toothpaste: Associations with their one-year-old child's preventive oral health behaviour
<p><strong>Objective: </strong>The aim of the study was to examine the tooth brushing frequency and use of fluoridated toothpaste of the mother and father were associated with the tooth brushing frequency and use of ...
Scattering of therapeutic radiation in the presence of craniofacial bone reconstruction materials
<h3>Purpose</h3><p>Radiation scattering from bone reconstruction materials can cause problems from prolonged healing to osteoradionecrosis. Glass fiber reinforced composite (FRC) has been introduced for bone reconstruction ...
Effect of interface surface design on the fracture behavior of bilayered composites
<p>This study aimed to evaluate the effect of different interface designs on the load-bearing capacity of bilayered composite structures (BLS). Cylindrical specimens of BLS were prepared from base composite of 3.5 mm ...
Sinonasal inverted papilloma - malignant transformation and non-sinonasal malignancies
<p><strong>Objectives: </strong>To assess malignant transformation rate, non-sinonasal malignancies, and factors contributing to recurrence in patients treated for sinonasal inverted papilloma (SNIP).</p><p><strong>Study ...
Periodontitis and peri-implantitis tissue levels of Treponema denticola-CTLP and its MMP-8 activating ability
<p><strong>Background and Aims:</strong> Chymotrypsin-like-proteinase of Treponema denticola (Td-CTLP) can stimulate the protein expression and activation of matrix metalloproteinase (MMP)-8 (or collagenase-2), a potent tissue destructive enzyme from gingival cells in vitro. The aims of this study were 1) to demonstrate the proMMP-8 (or latent MMP-8) activation by Td-CTLP in vitro and 2) to detect Td-CTLP and MMP-8 protein levels in the tissue samples of peri-implantitis and periodontitis patients.<br></p><p><strong>Materials and Methods:</strong> proMMP-8 activation by Td-CTLP was analyzed by immunoblots. Tissue specimens were collected from 38 systemically healthy and non-smoking patients; 14 of whom had moderate to severe periodontitis, 10 of whom were suffering from peri-implantitis, and finally 14 of whom showed no sign of periodontal inflammation nor radiological bone decay (control group). The immune-expression levels of MMP-8 and Td-CTLP in the epithelium and the connective tissue were analyzed immunohistochemically. A pixel color-intensity analyze was performed with ImageJ software (version 1.46c; Rasband WS, National Institutes of Health, Bethesda, MD, USA) to obtain a comparable numeral score for each patient's epithelium and connective tissue MMP-8 and Td-CTLP enzyme level.<br></p><p><strong>Results: </strong>Td-CTLP activated proMMP-8 in vitro by converting the 70 75 kDa proMMP-8 to 65 kDa active MMP-8. Also, lower molecular size 25 50 kDa parts of MMP-8 were formed. There was no statistically significant difference between the study groups in terms of their MMP-8 and Td-CTLP levels in the epithelium or in the connective tissue.<br></p><p><strong>Conclusion:</strong> Regarding the limits of this study, it can thus be said that the Td-CTLP enzyme can activate the host proMMP-8 enzyme. Tissue protein levels of MMP-8 and Td-CTLP do not seem to be changed in peri-implantitis and in periodontitis.</p>...
MRI correlates to histopathological data in oral tongue squamous cell carcinoma diagnostics
<b>Objectives</b> <div>The purpose of this study was to compare magnetic resonance imaging (MRI) maximum tumor diameter and depth of invasion with histopathology in oral tongue squamous cell carcinoma (OTSCC) patients in ...