Impact of Bone Augmentation of Facial Bone Defect around Osseointegrated Implant: A Three Dimensional Finite Element Analysis.

(1) Background: When dental implants are placed at the esthetic zone, facial bone fenestration might be expected. This study aimed to evaluate the biomechanical effect of bone augmentation around implants with facial bone fenestration defects using the finite element method. (2) Methods: An anterior maxillary region model with facial concavity was constructed with a threaded implant inserted following the root direction, resulting in apical threads exposure to represent the fenestration model.

Influence of Age on Calvarial Critical Size Defect Dimensions: A Radiographic and Histological Study.

Calvarial critical-size defect has been used to assess techniques and materials in the bone regeneration field. Previous studies utilized young adult rats with 3 months of age, which might not reflect the geriatric conditions. This study aimed to assess the dimensions of the calvarial critical-size defect in aged rats.

Effect of calibration of a medical review monitor on the visibility of mandibular canal at dental implant sites: A cone beam CT study.

Objectives: The aim of this study was to assess the visibility of mandibular canal (MC) on cone beam CT (CBCT) images using a medical review monitor under two different calibration modes. The effect of age, gender, and location of the dental implant site was also assessed.

Materials And Methods: CBCT images of 428 dental implant sites were selected for the study.

Biomechanical Effect of an Exposed Dental Implant's First Thread: A Three-Dimensional Finite Element Analysis Study.

BACKGROUND The purpose of this study was to assess the effect of different exposure levels of a dental implant's first thread on adjacent bone stress and strain using the finite element analysis method. MATERIAL AND METHODS Three-dimensional models of 2 threaded implants and abutments with a mandibular bone segment were constructed to represent the covered (C) and exposed models. In the exposed models, the implant was first placed in the bone, and rotated around its axis a quarter-turn each time to simulate 4 different levels of first thread exposure at the mid-lingual side: Upper Flank (UF), Thread Crest (TC), Lower Flank (LF), and Thread Root (TR) models.

Predictability of bone density at posterior mandibular implant sites using cone-beam computed tomography intensity values.

Objective: The aim of this study was to investigate the predictability of bone density at posterior mandibular implant sites using cone-beam computed tomography (CBCT) intensity values.

Materials And Methods: CBCT cross-sectional images for 436 posterior mandibular implant sites were selected for the study. Using Invivo software (Anatomage, San Jose, California, USA), two observers classified the bone density into three categories: low, intermediate, and high, and CBCT intensity values were generated.

Volatile sulphur compounds in exhaled air of dental students smoking the waterpipe: a nested case control study.

Background: This study aims at investigating a potential adverse effect that waterpipe tobacco smoking may cause by comparing levels of volatile sulphur compounds in exhaled air of male dental students who smoke the waterpipe with those who do not smoke.

Methods: Dental students were categorized into waterpipe smokers and non-smokers. Volatile sulphur compounds were measured using a halimeter following the completion of questionnaire on smoking and oral hygiene habits and self-perceived halitosis.

Comparison of mesiodistal space measurements of single-implant sites on panoramic and oblique images generated by cone-beam CT.

Purpose: To compare the mesiodistal space measurements of single-implant sites on panoramic and oblique images generated by cone-beam CT (CBCT).

Methods: CBCT images for 101 single-implant sites of 66 patients referred for pre-surgical radiographic implant planning were selected for the study; 15-mm-thickness panoramic images were reformatted and used for measuring mesiodistal space dimensions. The measurements were repeated and compared with those of thin oblique images (200-300 μ) using Wilcoxon signed rank test.

Oral health status in children with acute lymphoblastic leukemia.

Unlabelled: Leukemia is a malignancy of the bone marrow. Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy and accounts for nearly 75% of all newly diagnosed leukemias and 25% of all malignancies in childhood. The aim of the present study was to review the oral health status in children with ALL.

Magnitude and direction of mechanical stress at the osseointegrated interface of the microthread implant.

Background: The mechanism by which the microthread implant preserves peri-implant crestal bone is not known. The objective of this research is to assess the effect of microthreads on the magnitude and direction of the stress at the bone-implant interface using finite element analysis modeling.

Methods: Three-dimensional finite element models representing the microthreaded implant (microthread model) and smooth surface implant (smooth model) installed in the mandibular premolar region were created based on microscopic and computed tomography images.

Morphologic classification and stress analysis of the mandibular bone in the premolar region for implant placement.

Purpose: The objective of this study was to assess the influence of mandibular morphology on the stress and strain distributions in the bone supporting an implant.

Materials And Methods: Subjects were selected from patients with missing mandibular premolar teeth. Computed tomographic scans of the premolar region were classified into nine groups based on the overall bone morphology and the relative position of the alveolar crest.