For bleaching AH26 sealer-stained teeth, carbamide peroxide gel and carbamide peroxide gel mixed with sodium perborate were equally effective and significantly better than sodium perborate mixed with water.
Introduction: The aim of the present study was to compare the effects of laser and basic fibroblastic growth factor (bFGF) treatment on operative wound healing in a rat model. Methods: Sixty-six male Wistar rats were employed in this study. A 10-mm surgical wound was created on the buccal mucosa of each rat, under anesthesia, and then the rats were divided into 3 groups of 22: (1) GF group (received subcutaneous injection of bFGF), (2) laser group (treated with low-level laser irradiation), and (3) control group (received no treatment). On day 5, half of the rats in each group and on day 10 the other half, were sacrificed. Afterward, samples were taken from rats' buccal mucosa for histological assay and scoring. The data were analyzed using Mann-Whitney test (α = 5%). Results: On day 5 there was not any significant difference between GF and control groups; however, the laser group showed clinically delayed wound coverage, compared to other groups (P < 0.05). On day 10, histological examination demonstrated marked vascular granulation tissue (GT) in GF group. Collagen production was significantly prominent in laser group compared to GF treated samples (P = 0.004). Inflammation of GT in GF and laser groups was significantly less than that in control samples (P = 0.005 and P = 0.001, respectively). Conclusion: The components of wound matrix induced by GF and laser treatment were significantly different. Although bFGF or laser treatment of oral wounds, under the conditions of the present study, did not accelerate wound healing, they showed some other notable effects on the quality of healing.
Mucoepidermoid carcinoma (MEC) is the most common malignant salivary gland neoplasm. Central MEC (CMEC) is a rare primary intraosseous bony lesion with an incidence of 2%–4.3% of all MECs reported. In this article, we present a rare case of a CMEC in the anterior region of maxilla at a 43-year-old female patient that was arising from a dentigerous cyst. CMECs are extremely rare tumor. They are usually low-grade lesions with favorable prognosis. Odontogenic cysts are one of the origins of this lesion. Treatment of impacted tooth is necessary in the early stage for prevention of this neoplasm.
Context:The essential role of a general dental practitioner is recognizing the nature of the oral cavity lesions. Periapical lesions, which are observed in radiographs of patients, may have odontogenic or nonodontogenic origins. This review aimed to study differential diagnosis of common and important periapical lesions. Evidence Acquisition: English-language literature were searched by manual and electronic search with the terms "periapical lesions", "jaw neoplasms", and "non-odontogenic lesions" in three data bases of MEDLINE, Google scholar, and SCOPUS among published studies since 2000 to 2013. All review articles, original articles, case reports, and case series were evaluated. Results: In this study, it has been showed that many periapical lesions have not endodontic origin and not healing by root canal therapy.
Conclusions:The authors recommended to have paraclinical tests, especially vitality tests, in addition to clinical and radiographic examinations to avoid endodontic mistreatment. In suspicious cases, biopsy of lesions, referral to pathologist, and long-term fallow-up is required.
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