Journal of Islamic Dental Association of IRAN
Volume:29 Issue: 3, Summer 2017

Understanding the vascular anatomy of the maxillary sinus plays an important role in the success of sinus grafting and determining the location of lateral osteotomy. The aim of the present study was to localize the posterior superior al-veolar artery (PSAA) and to measure the distance from this vascular canal to the maxil-lary sinus floor and alveolar crest by cone-beam computed tomography (CBCT).
This study was conducted on 600 CBCT scans. The distance from the inferior border of the PSAA to the maxillary sinus floor and alveolar crest was measured and the position of this vascular canal was evaluated. The distance from the vascular canal to the maxillary sinus floor was also compared in dentulous and edentulous patients. The results were analyzed by repeated measures ANOVA and Tukey’s post-hoc test.
The PSAA was detected on 150 scans. The intraosseous position of the canal was seen in 51.30% of the cases. There were insignificant differences among the distances from the vascular canal to the maxillary sinus floor in different dental areas. However, there were significant differences in the distances from the vascular canal to the alveolar crest in different regions (P In this study, the PSAA was detected in 25% of the cases. The smallest distance between the vascular canal and maxillary sinus floor was observed in the first premolar and first molar regions, respectively. Determining the position of the PSAA by CBCT is useful for reducing perioperative bleeding; therefore, CBCT is recommended as a routine imaging technique prior to sinus lifting.

Several studies have compared the orthodontists’, dentists’, and dental patients’ opinions with regard to facial profile esthetics; however, the Iranian population has been limitedly researched in this respect. Our aim was to determine the differences in the esthetic preferences of Iranian patients, dentists, and orthodontists with regard to facial profile esthetics.
In this cross-sectional study, ideal facial profiles for both genders were chosen, and nine anteroposterior combinations for each sex were obtained using the Dolphin imaging software program. 132 individuals (44 subjects per group) were asked to rank the facial profiles from 1 to 9 (the least and most attractive facial profiles, respectively). Kruskal-Wallis and Mann-U-Whitney tests were utilized to compare the results.
The facial profile with a retrusive maxilla/protrusive mandible was ranked as the worst profile by orthodontists, dentists, and patients (males: 1.25, 1.52, and 1.45, respectively, P=0.128; females: 1.89, 1.84, and 1.59, respectively, P=0.745). The orthodontists and dentists rated the ideal facial profile as the best profile (males: 7.98 and 7.80, respectively, P=0.033; females: 8.05 and 8.02, respectively, P=0.008); howev-er, the patients chose the retrusive mandible as the most attractive facial profile (males: 7.82, P=0.043; females: 7.89, P=0.009).
Clinicians must consider the patient’s idea about the ideal facial profile that he/she wants to achieve at the end of the treatment. Based on the results of this study, the Iranian patients prefer a more convex facial profile, which can be considered as an important factor in treatment planning.

Changing the color of resin luting cements could affect the aesthetic appearance of thin porcelain veneer. The aim of this in vitro study was to evaluate the effect of artificially accelerated aging on color stability of light-cured resin cement and flowable composite as a luting agent through the porcelain veneer.
This experimental study was carried out on 4 groups each contained 5 specimens with the dimension of 8 mm in diameter and 1 mm thickness. In group 1 and 2 five disks of resin cements and flowable composite were prepared, respectively. In group 3 and 4, the luting agent (1mm thickness) were bonded to feldspathic ceramic discs (1mm thickness). The color parameters of the samples in CIE Lab system were measured by spectrophotometer before and after artificially accelerat-ed aging. The results were statistically analyzed by Two-way ANOVA and t-test.
The highest color change was observed in Z350 flowable composite that showed a statistically significant difference with other groups (P Accelerated aging process could influence clinically unacceptable changes in the color of luting agents (E3.3). However, porcelain laminate with 1 mm thickness could cover the color changes of luting agent.

This study aimed to indicate the role of epidermal growth factor (EGF) in proliferation and growth of epithelial tissue and to determine the correlation be-tween the frequency of expression of EGF receptor (EGFR) by means of immunohistochemistry with survival rate in oral squamous cell carcinoma (OSCC).
Thirty-eight cases of OSCC diagnosed by hematoxylin and eo-sin (H&E) staining were included in this prospective study, and immunohistochemistry for EGFR was applied using antibodies against EGFR. The total score of stained cells and the correlation between the total score and survival rate of patients were recorded. The data were analyzed by Kaplan-Meier, Spearman and the log rank tests using SPSS software version 20.
The mean age of patients was 71.8±1.09 years. The follow up range was 25-86 months. The mean survival time for EGFR score 3 (51±9.32 months) was significantly higher than that for score 4, (28.64±4.1 months) (P=0.002) and overexpression of EGFR was correlated with poor prognosis. A significant correlation was found between the grade of tumor and EGFR scale (P=0.049, R=0.318). There was no significant correlation between EGFR overexpression and OSCC stage (P>0.05).
EGFR is probably an independent prognostic factor for assessment of survival rate. A correlation also exists between the grade of tumor and expression of EGFR.

This study aimed to assess the antibody titer against Porphyromonas gingivalis (P. gingivalis) in rats with experimentally induced periodontitis.
Thirty-three Surrey rats were randomly divided into three groups (n=11). Group 1 was vaccinated with formalin-killed whole cell (FKWC) P. gingivalis with incomplete Freund's adjuvant as vaccine carrier and orally inoculated with viable P. gingivalis (ATCC 33277). Group 2 was vaccinated with incomplete Freund's adjuvant and PG buffer and orally inoculated with viable P. gingivalis (positive control). Group 3 was vaccinated as group 2 without inoculation (negative control). Two weeks later, they were vaccinated with a booster dose. One week later, serum and saliva samples were obtained to assess antibody titer. Oral inoculation of bacteria was then done four times every 48 hours. Two weeks later, serum, saliva and subgingival plaque samples were obtained from the maxillary second molar area for assessment of P. gingivalis count in the subgingival plaque. Data were analyzed using Mann-Whitney U test and Wilcoxon signed-rank tests.
Serum and salivary antibody titers against P. gingivalis in group 1 one week af-ter booster dose and two weeks after oral inoculation of bacteria were significantly different from those in other groups (P Vaccination with FKWC P. gingivalis increased serum IgG and salivary IgA and limited the colonization of P. gingivalis in subgingival plaque of rats.

Recurrent aphthous stomatitis (RAS) is the most common oral mucosal lesion in the general population. Different treatments have been used for RAS, including herbal medicine. In this study, the randomized clinical trials (RCTs) on the effect of medicinal plants on RAS were systematically searched and reviewed.
The literature from 1985 to 2015 in the PubMed, Scopus, Embase, Cochrane and Medline databases were searched using the relevant keywords. After screening, 15 articles were reviewed.
Herbal medicine has been used in the treatment of RAS for reducing the pain and healing time and promoting ulcer healing. Most herbal products are in the form of mouthwash.
Herbal medicine can be used as an alternative therapy for RAS.