Journal of Dentomaxillofacil Radiology, Pathology and Surgery
Volume:10 Issue: 2, Spring 2021

Root remediation when the initial treatment fails is the most basic treatment before any other surgical procedure. The aim of this study was to evaluate the factors affecting the success and failure of endodontic treatment in a period of 6-24 months.

This cross-sectional analytical study was performed during 1996-94 with the participation of 76 patients, 19 (25%) male and 57 (75%) female who were referred for non-surgical re-treatment of endodontics after failure of initial treatment. Took. The re-treatment method was conventional. Radiographic and clinical signs were compared before and after re-treatment. These changes were categorized according to Heald, Healing & (success) and non-healed (Failure). The ability to chew was also recorded after the follow-up period. Wilcoxon signed test, rank regression test (Ordinal regression analysis), Mc Nemar test were used for statistical analysis.

The improvement of clinical symptoms was 98.7% (P = 0.0001). And (88.2%) patients had full ability to chew after re-treatment of the root. Following rank regression test, canine teeth had a higher chance of recovery than other types of teeth (P <0.000). With age, the chance of recovery decreased (P = 0.033). The left teeth were more likely to recover (P = 0.008). Goodness of Fit, measured by Pearson chi-square test, confirmed the findings (χ2 = 87.667, P = 0.942). McNemar analysis confirmed the positive effect of therapeutic intervention on patients’ success (success) (p <0.001).

Following re-treatment and follow-up of dental treatment in this study, re-treatment is still the first non-invasive step in achieving success in achieving tooth
preservation.

The aim of this study was to determine the accuracy of digital panoramic radiography in estimating the crestal width of implant fixtures after surgery.

We selected 241 digital panoramic images after implant insertion which had documented information of their actual size. The crestal width was measured on radiographs. We compared two measuring methods in different jaw regions (total, maxilla, mandible, whole right, whole left, all sextants) in order to find their accordance.

There was a significant difference between the two methods by using inter-observer ecoefficiency (ICC) in all regions (p<0.05). There was also a significant difference between the two by using the bland-altman plot (p<0.05) except in mandibular anterior right and left sextants.

Digital panoramic radiography is not accurate enough for exact measurements such as inserted implant dimensions because of image distortion and magnification. It had better use more accurate methods like CBCT in implant treatments.

dentists are vulnerable to work-related musculoskeletal disorders (WMSDs) of the neck and upper extremities. This study aims to investigate the prevalence of musculoskeletal pains and disability among dentists in Zahedan. The results of this study can be used to take effective preventive measures to improve the quality of life of dentists.

this descriptive-analytical study, which has been conducted at the time of the coronavirus (Covid-19) outbreak.102 dentists participated in the study. An online questionnaire was sent to them through cyberspace. The questionnaire contains demographic information of the dentists (age, gender, work experience, daily working hours, and academic rank) and items associated with pain in the neck, shoulders, back, arms, and forearms. The intensity of pain was measured by the VAS scale. Besides, some items were also asked at the end to measure the disability of the back and neck. Comparing the qualitative data was done using Chi-Square, and quantitative data comparison was done using independent t-test and ANOVA.

96.1% of dentists reported chronic pain at least in one organ. Neck pain at 77.5% and backache at 72.5% were the most prevalent pains, and forearm pain at 12.7% had the least prevalence. Prevalence of musculoskeletal pain was not significantly different in terms of gender, age, work experience, daily working hours, and academic rank (p>0.02). The disability in the neck was equal to 15.545% and was equal to 12.81% in the back.

the majority of dentists reported pain and disease in different areas, especially the neck, back, shoulders, and wrists. It would be better for the dentists to perform stretching exercises regularly, and to be focused on the empowerment of upper-body muscles.

Central mucoepidermoid carcinoma (MEC) of the jaws is rare and it comprises 2–3% of all MECs reported in the literature. It may be similar to a glandular odontogenic cyst (GOC), mainly in incisional biopsies. The precise diagnosis of these lesions is essential since they have different treatment modalities and prognosis. This paper presented a 71-year-old male patient presented with a unilocular radiolucent lesion in the left posterior mandible. The lesion had some evidence of cortical perforation and soft tissue extension in radiographic features. Incisional biopsy of the lesion was performed and the specimen was diagnosed as the GOC. However, the excisional biopsy revealed proliferation of epidermoid and mucous cells in the cyst wall and the lesion was diagnosed as central low-grade MEC of mandible. Central mucoepidermoid carcinoma (CMEC) may resemble a GOC in the incisional biopsy. Therefore, we discuss the importance of radiographic and histopathologic correlation in the diagnosis of CMEC in this article.

Radiomorphometric indices obtained from panoramic radiography are used to quantitatively and qualitatively evaluate osteoporosis. Given the importance of early diagnosing osteoporosis.The present study was conducted to compare osteoporotic and healthy women in Rafsanjan, Iran in terms of mandibular radiomorphometric indices obtained from their panoramic radiographs.

This descriptive cross-sectional study examined 212 subjects, including 53 osteoporotic women and a control group comprising 159 women presenting to the Department of Oral and Maxillofacial Radiology, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran .The participants were investigated by performing radiographic imaging using a digital panoramic system (Planmeca Promax, Helsinki, Finland). The radiographic data recorded on each image included radiomorphometric indices such as mandibular cortical index(MCI),  antegonial index (AI) and gonial index(GI). The data collected from the checklists were analyzed in SPSS-22.

The osteoporotic patients were not significantly different from the controls in terms of AI. The mean GI was significantly higher in the osteoporotic women than in the women in the control group. Investigating MCI showed that category C1 was significantly higher in the controls than in the osteoporotic women, whereas category C2 was higher in the osteoporotic group than in the controls.

The present findings revealed that GI and MCI obtained from panoramic radiographs can be used to diagnose osteoporosis and differentiate osteoporotic patients from healthy individuals. Although the indices were affected by age in both groups, differences in the indices between the patients and controls were insignificant in the same age group.

Osteochondroma is an osseous protuberance with cartilaginous growth potential that usually forms at the ends of long bones such as knee, hip, shoulder and joints(1). Osteochondromas are one of the most common benign tumours of bone, approximately 35% to 50% of all benign tumors and 8% to 15% of all primary bone tumors (2). Only about 1% of these occur within the head and neck region (1). The most common sites of occurrence is coronoid process of the mandible and the mandibular condyle(3-5). Trauma and inflammation have been implicated as predisposing factors (6 ,7). Clinical Feather  of condylar osteochondroma include facial asymmetry ,vertical elongation of the face on the affected side, malocclusion with cross-bite on the contralateral side and lateral open bite on the affected side, TMJ dysfunction symptoms such as pain Which may resemble those seen in patients with temporomandibular joint disorders (TMD)(2-8). Differential diagnosis of slow-growing tumors of the mandibular condyle include giant cell tumor, condylar hyperplasia, vascular malformation, osteoma and chondroma (9,10).these lesions are radiopaque and are easily identified on computed tomography (CT)(11). Pre operative computed tomography scans (CT) are essential in the treatment planning of these tumours(12). Cone beam computed tomography (CBCT) is a good alternative modality  for evaluation of mandibular condyle.in comparison to CT scans, CBCT provides geometrically accurate images and excellent spatial resolution with lower dose(13).  These condylar tumors have been variably treated. Partial or total condylectomy, vertical ramus osteotomy and adjuvant orthognathic surgery are possible modes of treatment depending on cosmetic defect. Reconstruction plan depends on the case to case situation and can be performed by upward placement of sagittally or vertically splited ramus, locally available bone graft with attached medial pterygoid muscle, costochondral graft or a custom-made titanium plate(14). The aim of this case report is to describe clinical, radiographic features, differential diagnosis, histopathologic feater and treatment of condylar osteochondroma.