Computed Tomographic Analysis of Mandibular Tori and Their Relationship to Remaining Teeth.

Mandibular tori (bilateral, asymptomatic, lingual mandibular protuberances) often remain untreated. When considering surgical resection, understanding the shape, size, and position of the tori at the bone level is crucial. However, collecting accurate information regarding these characteristics is challenging in cases where the oral mucosa is prominent on the floor of the mouth.

Submandibular gland carcinoma ex pleomorphic adenoma with calcification.

We report an unusual case of carcinoma ex pleomorphic adenoma (CXPA) in the submandibular gland. The mass had a unique calcification. Panoramic tomography revealed sponge-like calcification.

Development of flash cards to teach about lesions in the jaws and maxillary sinuses.

Objective: We sought to evaluate a set of flash cards to teach about lesions of the jaws and maxillary sinuses.

Methods: We placed illustrations of 30 diseases of the jaws and maxillary sinuses on the front of the cards (7 cm × 5 cm). On the backs of the cards, a description of the radiological findings and the corresponding QR code for each disease were printed.

Effect of exposure parameters and gutta-percha cone size on fracture-like artifacts in endodontically treated teeth on cone-beam computed tomography images.

Objectives: To ascertain the effects of exposure parameters (tube current and tube voltage) and the gutta-percha cone (GPC) size on root fracture-like artifacts obtained with cone-beam computed tomography (CBCT).

Methods: Fracture-like artifacts appearing on CBCT images of nine extracted human mandibular premolars filled with GPCs of size #50 or #80 were analyzed using six exposure factors: two tube voltages (80 kV and 110 kV); and three tube currents (4 mA, 7 mA, and 10 mA). On axial images, the gray value (GV) was recorded at three points: the mesiobuccal portion (MBP) as the sound dentin, the mesial portion (MP) as the artifact line, and the water area (WA).

Evaluation of diffusion parameters and T2 values of the masseter muscle during jaw opening, clenching, and rest.

Background: Diffusion-weighted imaging (DWI) and diffusion-tensor imaging (DTI) can be used to evaluate changes that accompany skeletal muscle contraction.

Purpose: To investigate whether jaw opening or closure affect the diffusion parameters of the masseter muscles (MMs).

Material And Methods: Eleven healthy volunteers were evaluated.

Cervical lymph nodes with or without metastases from oral squamous carcinoma: a correlation of MRI findings and histopathologic architecture.

Objectives: The aim of this study was to describe the magnetic resonance images (MRIs) of the architecture of metastatic lymph nodes as well as healthy lymph nodes and to correlate the images with the histopathologic architecture of the lymph nodes from oral squamous cell carcinoma.

Study Design: The signal intensities of 98 cervical lymph nodes from 20 patients with oral squamous cell carcinoma were evaluated on T2-weighted and diffusion-weighted whole-body imaging with background body signal suppression (DWIBS). The MRI findings were compared with the histopathologic architecture.

Assessment of the relationship between impacted mandibular third molars and inferior alveolar nerve with dental 3-dimensional computed tomography.

Purpose: The purpose of this study was to assess the capacity of dental 3-dimensional computed tomography (3D-CT; limited cone-beam CT) to predict the exposure and injury of the inferior alveolar nerve (IAN) after mandibular third molar extractions.

Materials And Methods: This study was a retrospective case series of patients who presented for extraction of mandibular third molars. Subjects eligible for study enrollment were those who underwent preoperative dental 3D-CT because the mandibular third molars were determined to be extremely close to the IAN on panoramic radiogram.