ABSTRACT
Statement of the Problem: Achieving a normal soft tissue facial profile is considered to be the main concern of class III patients and the goal of most class III treatments
Purpose: The purpose of this study was to investigate the effects of facemask treatment on profile with photogrammetric method
Materials and Method: Before [T0] and after [T1] treatment photograms of 40 class III patients profiles [20 male and 20 female individuals] treated with protraction face mask that met the inclusion criteria were digitized and analyzed using Aesthetic Analyzer software. Selected linear and angular measurements were performed for each patient and the changes were noted
Results: An increase in inferior facial height [p< 0.001] and inferior facial angle [p< 0.001] was observed. Nasal prominence and upper lip prominence also increased significantly [p< 0.001]. Advancement of sub nasal area was observed to be significant in females [p< 0.05] in contrast to males
Conclusion: Remarkable advancement in the middle face and consequent fullness in the soft-tissue profile can be achieved by using protraction face mask. The response to treatment is not different between males and females
ABSTRACT
Statement of the Problem: The first step towards appropriately planning orthodontic treatment and prevention services is to understand the needs and demands of the target population. However, this is ignored in most developing countries
Purpose: This study aims to evaluate the attitudes of patients in Fars province towards travelling to the provincial capital [Shiraz] to receive orthodontic treatments
Materials and Method: This cross-sectional study randomly selected 420 patients referring to two public and four private orthodontic centers in Shiraz, coming from other regions of Fars province. The patients were interviewed about their demographic status, residing area and the reasons of deciding to receive orthodontic treatment in Shiraz. Data were analyzed by SPSS software, using Chi-square and ANOVA statistical tests
Results: The response rate was 96% [N=403]. Near half of the patients [176; 43.7%] lived 100-200km, and 80 [19.9%] patients lived farther than 200km from Shiraz. Having no orthodontist [54.8%] and no dentist providing orthodontic treatment [39.2%] in their region were the most important factors bringing the patients to provincial capital for orthodontic treatments. High costs of treatment in their home county and hoping to receive treatment of higher quality were the other important motives for lower and higher socio-economic backgrounds, respectively. Friends'/relatives' recommendation was a more important factor in patients using public clinics for choosing their therapist, while referral from dentists was more important for patients going to private clinics. The patients who lived in counties farther than 200km from Shiraz were more concerned about quality of treatment results than those who lived closer [p= 0.010]
Conclusion: A multifactorial approach is needed to provide the desired orthodontic services for people in Fars province so that they would not need to travel to the capital for such treatments
ABSTRACT
Statement of the Problem: Some studies have reported the bond strength to be significantly lower in fluorotic enamels than the non-fluorosed
Purpose: The purpose of this study was to evaluate the shear bond strength of metallic brackets to non-fluorosed and fluorosed teeth after different enamel conditioning
Materials and Method: A total of 176 freshly extracted human premolars [88 nonfluorosed and 88 fluorosed teeth] were used in this study for bonding the metallic brackets. Teeth with moderate fluorosis were used according to Thylstrup and Fejereskov index [TFI]. Eighty non-fluorosed and 80 fluorosed teeth [TFI=4-6] were randomly divided into 8 equal groups of 20 teeth each. The remaining 16 teeth were used for scanning electron microscopy observation. The enamel surface was conditioned by 4 methods: acid etching for 30 sec, acid etching for 120 sec, air abrasion followed by acid etching, and Er: YAG laser etching followed by acid etching. The morphology of etching patterns in different groups was studied under scanning electron microscope
Results: The shear bond strength of fluorosed teeth to the brackets was significantly lower than non-fluorosed ones [p= 0.003]. The shear bond strength of laser-acid groups in both non-fluorosed and fluorosed teeth was significantly lower than other groups [p< 0.001]. Weibull analysis indicated that the chance of failure under the applied force was different between fluorosed and non-fluorosed group. The scanning electron microscope observations revealed that the fluorosed teeth treated with phosphoric acid had fewer irregularities compared to non-fluorosed teeth. The most irregularities were detected in the teeth conditioned with phosphoric acid for 120 seconds
Conclusion: Fluorotic enamel adversely affects the bond strength of orthodontic brackets. None of the conditioning methods tested in this study could significantly improve shear bond strength of metallic brackets. Er: YAG laser conditioning followed by acid further reduced the bond strength in non-fluorosed and fluorosed teeth
ABSTRACT
Statement of the Problem: No published literature was found studying the people's reasons on why to choose or not to choose a dental care setting in south Iran, while understanding their attitude towards choosing their dental care center is consequential for planning a successful oral health care service system
Purpose: To determine the factors affecting how people of the city of Shiraz choose their dental health services
Materials and Method: A cross-sectional analytic study was designed. A self-administered questionnaire was produced, tested and then distributed among 570 multistage randomly selected parents of schoolchildren of the city of Shiraz. Independent t-test, paired t-test and Spearman correlation were used to analyze the factors influencing participants in choosing clinics for their esthetic and non-esthetic dental treatments
Results: 400 questionnaires were complete and analyzed. The recommendation from others was found to be the most encouraging factor to choose a dentist or a dental clinic. More importance was reported for various factors affecting participants' choice of dental clinic when seeking non-esthetic treatments, while recommendation and reputation of dentist/dental clinic played a vital role in esthetic treatments. The cost was more important for respondents living in more deprived districts [p= 0.05], for unemployed group [p< 0.001] and for those with less education [p< 0.001]
Conclusion: Factors affecting people's choice for dental care proved to be highly complicated. Recommendation was found playing an important role. Dental patients consider various factors when looking for non-esthetic treatment but would go for the best possible when seeking esthetic treatments. Findings of this study indicate that patients' choice and utilization of dental service can be improved if dental clinics provide high quality of dental care with reasonable fees