Publications by authors named "Tie-Mei Wang"
Localisation of the Infraorbital and Mental Foramen in Orthognathic Surgery: a CBCT Study.
Chin J Dent Res
December 2024
Objective: To establish precise positional references for orthognathic surgery by examining the relative positioning of the infraorbital foramen (IOF) in relation to the anterior nasal spine (ANS) and the mental foramen (MF) in relation to the pogonion (Pog).
Methods: A cohort of 115 patients with CBCT images was randomly selected for analysis. Distances and positional relationships between the IOF and ANS, as well as the MF and Pog, were measured using 3D reconstruction images.
Article Synopsis
- The study aimed to assess how effectively 64-slice MDCT contrast-enhanced scanning can diagnose maxillofacial soft tissue hypervascular tumors by evaluating their imaging features and diagnostic abilities.
- A retrospective analysis of 21 cases revealed a high diagnostic accuracy of 90.48% for the 64-MDCT scans, with sensitivity at 83.30% and specificity at 72.73%, using pathological results as the gold standard.
- The findings suggest that 64-MDCT can effectively evaluate blood supply in these tumors pre-surgery, potentially reducing blood loss and aiding in treatment planning.
Article Synopsis
- Metastatic adenocarcinoma of the jaw (MAJ) is a rare type of cancer that makes up 1%-3% of oral and maxillofacial tumors, with oral pain often being the first symptom indicating the spread of a primary tumor elsewhere in the body.
- The study reviewed patient records from 2006 to 2020 to analyze the clinical and CT characteristics of MAJ, proposing a classification scheme based on five different types of bone changes observed.
- Results indicated that common primary sources of MAJ included the lungs and liver, with various CT features such as osteolytic and mixed types predominating, highlighting the importance of early detection by dental professionals.
Comparison of diagnosis of cracked tooth using contrast-enhanced CBCT and micro-CT.
Dentomaxillofac Radiol
October 2021
Objectives: To evaluate the diagnostic accuracy using sodium iodide (NaI) and dimethyl sulfoxide (DMSO) as contrast agent in cone beam computed tomography (CBCT) scanning, and compare this with micro-CT.
Methods: 18 teeth were cracked artificially by soaking them cyclically in liquid nitrogen and hot water. After pre-treatment with artificial saliva, the teeth were scanned in four modes: CBCT routine scanning without contrast agent (RS); CBCT with meglumine diatrizoate (MD) as contrast agent (ES1); CBCT with NaI + DMSO as contrast agent (ES2); and micro-CT (mCT).
Purpose: To compare the root canal morphology of mandibular incisors by using cone-beam CT (CBCT) and canal staining and clearing technique.
Methods: Sixty-one extracted mandibular incisors with complete dental root and apex which received no endodontic treatment and no post crown restoration were selected. Each tooth was radiographed with CBCT, and the root canal system was stained by canal staining and clearing technique.
[Analysis of mandibular bone mineral density of senile osteoporosis patients].
Zhonghua Kou Qiang Yi Xue Za Zhi
April 2010
Objective: To investigate the mandibular bone mineral density (BMD) change of senile osteoporosis patients and the relationship between the mandible bone loss and systemic bone loss.
Methods: Forty senile osteoporotic patients (group A), 40 non-osteoporosis control elders (group B) and 40 healthy youths (group C) were included in this study. Standard digital panoramic tomography (SDPTG) was taken for each participant.
Aim: The aims of this report are to present a case of nonsyndromic multiple supernumerary teeth and a discussion of the value of three-dimensional computerized tomography (3D CT) for precise radiographic imaging of the anomaly.
Background: Multiple supernumerary teeth without any associated syndromes are very rare. Exact radiographic presentations with an associated diagnosis of nonsyndromic multiple supernumerary teeth have not been well published.
[Evaluation of mandibule bone loss of periodontitis with standard digital panoramic tomogram].
Hua Xi Kou Qiang Yi Xue Za Zhi
February 2008
Objective: To compare the mandibular indices differences between periodontitis and non-periodontitis subjects by digital panoramic tomograms in order to find a simple and effective method to evaluate the density of alveolar bone and study the relativity between local bone loss and systemic bone loss.
Methods: Standard digital panoramic tomograms of sixty periodontitis subjects and sixty non-periodontitis subjects were taken. Density and height cortical width (CW) and panoramic mandibular index (PMI) of alveolar bone were measured on the digital panoramic tomograms.
[Bone density changes in the apical area after rapid orthodontic extrusion of subgingivally fractured tooth].
Zhonghua Kou Qiang Yi Xue Za Zhi
October 2007
Objective: To evaluate the bone density changes in the apical area of subgingivally fractured tooth after rapid orthodontic extrusion.
Methods: Twelve fractured incisors in 11 patients extended 2 - 5 mm below the gingival line were selected. Two weeks after root canal therapy, the subgingival fragment was lifted up and the fracture line was brought 1.