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Oral Health Determinants and Demographic Factors of Permanent Tooth Extraction in Iranian Adults  [PDF]
Lida Jarahi, Neda Jarahi, Maryam Emadzadeh
Health (Health) , 2016, DOI: 10.4236/health.2016.85045
Abstract: Preservation of teeth until old ages indicates oral health status. Improving life expectancy in developing countries makes teeth care an important topic. This study assessed reasons of tooth extraction (TE), oral health determinants and demographic factors of permanent TE in Iranian adults. Adult people who referred to dental clinic of Mashhad Medical University in 2012 for dental extraction and lived in Mashhad city, participated in this study by convenient sampling method after obtaining informed consent. Demographic characteristics, oral health status, health habit and reasons of TE of participants were assessed. Data were analyzed by SPSS11.5 by Chi-Square, T-Test, ANOVA, Mann-Whitney and Kruskall-Wallis tests. Totally 254 people participated (383 extracted teeth) that 55% were female. Mean age of participants was 39.3 years; females were 6.1 years younger than males. The main reason of TE was dental caries (55.1%), following by impaction. There was significant difference between average times of tooth brushing in both sexes, but difference was not shown in sugar intake. Except in people with college degrees that dental caries is the main cause of TE. With increase in life expectancy to more than 70 years old in Iranian, the age of TE especially in women is younger than expected. The most common cause of TE is dental caries that seem in spite of improving health indexes in Iran, poor oral hygiene remains as a problem. There is no significant difference between frequency of sugar intake and level of education that indicates unhealthy dietary habits related to tooth decay.
Prevalence of dry socket following extraction of permanent teeth at Kathmandu University Teaching Hospital (KUTH), Dhulikhel, Kavre, Nepal: A study  [PDF]
C Upadhyaya,M Humagain
Kathmandu University Medical Journal , 2010, DOI: 10.3126/kumj.v8i1.3216
Abstract: Background: One of the most common postoperative complications following the extraction of permanent teeth is a condition known as dry socket. Although the aetiology of dry socket is debated, it is probably multifactoral, and its pathogenesis remains unknown. Objectives: The aim of the study was to evaluate incidence of dry socket following extraction of permanent teeth at dental out-patient department (OPD) of Dhulikhel hospital, Kathmandu university teaching hospital (KUTH), Kavre, Nepal. Materials and methods: Retrospective reviews of records of total 1860 no of patients were studied who underwent extraction of permanent teeth for various reasons since January 2007 to December 2008 period. There were 873(47%) male patients and 987(53%) female patients. Information regarding indications for extraction, extracted tooth status, onset of symptoms, relevant findings of the examining clinician, interval between presentation, management given, and its outcome were retrieved and analysed. Results: A total 1860 no of patients were studied who underwent extraction of total 2640 number of permanent teeth for various reasons . A total of 103 (3.9%) extractions were complicated by dry socket in patients aged 11 to 80 years with female predominance (54.4%). Conclusion: The etiology of dry socket is multifactorial and ultimately it is the host's healing potential which determines the severity and duration of the condition. The incidence of dry socket was found as 3.9% in this study. The incidence was higher in female patients (54.4%) and in mandibular teeth extraction cases (68.93%). Key words: Extraction; Dry socket; Teeth DOI: 10.3126/kumj.v8i1.3216 Kathmandu University Medical Journal (2010), Vol. 8, No. 1, Issue 29, 18-24
Peculiarities of Primary Teeth and Effect of their Occlusion on that of Permanent Teeth
M Qandhari
Iranian Journal of Pediatrics , 1997,
Abstract: Primary teeth have the function of mastication and speech, and provide for anesthetic appearance of the face in the first 12 years of life. Occlusion of the permanent teeth follows that of the primary and shows little changes in comparison to it. This article describes the peculiarities of the primary teeth, emphasizes the importance of their occlusion and discusses the effect of it on that of the permanent teeth.
Dry Socket following Tooth Extraction in an Iranian Dental Center: Incidence and Risk Factors Dry Socket following Tooth Extraction in an Iranian Dental Center: Incidence and Risk Factors
Majid Eshghpour,Amir Moradi,Amir Hossein Nejat
Journal of Dental Materials and Techniques , 2013,
Abstract: Introduction: Dry Socket (DS) is a common post-surgical complication following extraction of permanent teeth. Various risk factors has been mentioned for this complication including gender, age, amount of trauma during extraction, difficulty of extraction, inappropriate irrigation, infection, smoking, and oral contraceptive use. The aim of this study was to evaluate the incidence of DS among permanent teeth extraction in an Iranian Oral and Maxillofacial clinic and also to identify risk factors. Methods: This cross-sectional study performed at Mashhad Faculty of Dentistry between January 2009 and June 2009. Total of 785 patients who underwent non-surgical extraction of permanent teeth included in this study. A questionnaire with two sections designed to collect demographic, medical, and extraction-related data along with data regarding cases returning with DS. Data were reported descriptively and analyzed using Chi-square test with 95% confidence interval. Results: Total of 1073 teeth included in this study. 46.11% of patients were male and 53.89% were female. The mean age of participants was 32.68 ± 17.63 years. Total of 31 patients (2.89%) were diagnosed with dry socket. Smoking and oral contraceptives intake had significant association with incidence of DS. In contrast, age, gender, medical status, tooth location, number of anesthetic carpules, anesthetic technique, pre-extraction antibiotic consumption, and academic year of students had no significant association with the incidence of DS. All cases with DS treated and were followed until resolution of DS. Conclusion: it is recommended to identify high risk groups (smokers and oral contraceptive takers) when performing extraction and to perform preventive measures in these group of patients to attenuate postoperative complications.
Evaluation of the reasons for the extraction among patients referred to the Oral Surgery Department,Faculty of Dentistry, Tehran University of Medical Sciences
Ramezanian M.,Alizade A.
Journal of Dental Medicine , 2004,
Abstract: Statement of Problem: Tooth extraction is always considered as the final treatment option in dentistry."nConsidering the numerous advances in dentistry, nowadays the preservation of the permanent teeth until old"nage is common. However, in most economically poor countries or those without security service insurance,"nthe high rate of extraction, particularly among restorable teeth, is regrettable."nPurpose: The aim of the present study was to determine the reasons for tooth extraction among patients"nreferred to the faculty of Dentistry, Tehran University of Medical Sciences in 2002."nMaterials and Methods: This descriptive and cross-sectional study was conducted on 320 patients. The"ninformation about patient's general knowledge, oral health status, tooth location and causes of extraction were"ncollected and recorded in a questionnaire. The data were submitted to statistical Chi-Square test."nResults: No statistically significant difference was found between two genders in their mentioned causes for"nextraction. The most prevalent reasons were as follows: Caries (50%), Periodontal diseases (16.6%). Absence"nof an acceptable occlusion, prosthetic problems, patient's request, etc... make up the remaining 33.4% of the"nreasons."nConclusion: According to this study, it is suggested to investigate extraction etiology at the society level and"nif similar results are obtained, necessary steps should be taken to prevent caries and periodontal problems as"nthe major mentioned causes for tooth extraction.
Dental caries and extractions of permanent teeth in Jos, Nigeria
GA Chukwu, OA Adeleke, IS Danfillo, EC Otoh
African Journal of Oral Health , 2004,
Abstract: Objective: To determine the effect of tooth morphology and positioning on the occurrence of dental caries in permanent teeth. Design: Retrospective study. Method: Data was extracted from the case notes of patients that underwent extraction at the Plateau State Dental Centre, Jos, Nigeria from January 2000 to December 2001, as a result of dental caries and its sequalae. Result: 12696 patients attended the clinic, with a total of 11546-teeth extracted. 6145 (53.2%) permanent teeth were extracted due to caries and it's sequalae within the period under review. The upper anteriors accounted for 3.2%, pre-molars 7.7% and molars 29.8% while lower anteriors accounted for 0.4%, pre-molars 3.3% and molars 55.6%. The upper anteriors were eight times more vulnerable to caries attack compared to their corresponding lower anteriors. The upper right (43.3%) and left (36.9%) first premolars were four times prone to losses due to caries compared to their corresponding lower right (11.5%) and left (8.3%) first premolars. Similar pattern was observed for the upper and lower second premolar (P = 0.001). The lower right (31.3%) and left (31.3%) first molar were about two times more susceptible to caries than their corresponding upper right (18.2%) and left (19.2%) first molar. The same trend holds for the second and third molars (P = 0.000). Conclusion: The result of this study revealed that the upper premolars were more susceptible to dental caries than the corresponding lower teeth. The study also revealed that the molars were most susceptible to dental caries and would benefit from the use of prophylactic pits and fissure sealants. Key Words: Tooth morphology; extraction; fissure sealant; caries African Journal of Oral Health Vol.1(1) 2004: 31-36
Root Canal Configuration of One-rooted Mandibular Canine in an Iranian Population:An In Vitro Study  [cached]
Pejman Bakianian Vaziri,Shahin Kasraee,Hamid Reza Abdolsamadi,Shermin Abdollahzadeh
Journal of Dental Research, Dental Clinics, Dental Prospects , 2008,
Abstract: Background and aims. A perfect endodontic treatment necessitates proper understanding of the morphology of canal and pulpal variations. This in vitro study was conducted to demonstrate the internal anatomy of mandibular canine teeth in an Iranian population. Materials and methods. The samples consisted of 100 extracted mandibular permanent canines. The roots of the teeth were molded in acrylic boxes. The crowns of the teeth were cut and 2 mm cross sections were made from CEJ to the apex. Sections were examined using stereomicroscope to reveal the number and location of root canals. Results. From 100 evaluated teeth, 12 (12%) had 2 canals from which 5 had type II canal configuration and 7 (7%) had type III. 88% of the specimens had one canal and none were seen to be of type IV. Conclusion. The findings of this study emphasize the importance of dentist's knowledge of variations in root canal morphology, since leaving a canal untreated is one of the main reasons of endodontic failures. When treating mandibular canines, the existence of a second canal should be taken into consideration.
Endodontic treatment of the young permanent teeth  [PDF]
Aleksandrov Smiljana
Stomatolo?ki Glasnik Srbije , 2004, DOI: 10.2298/sgs0404203a
Abstract: Pulp treatment in the young permanent teeth represents significant problem in peadiatric dentistry. The aim of this paper was to present the course of endodontic treatment of a young permanent tooth and success after 26 years. Upper right central incisor remained functional following thorough endodontic therapy, temporary root canal filling with calciumhydroxide and final root obturation. After 26 years from the beginning and completion of endodontic treatment, the tooth is still in normal funciton.
Comparison of New Accuracy Degree and Tanaka Johnson Formulae for Prediction of Mesiodistal Width of Unerupted Permanent Canines and Premolars
MH Toodeh Zaeim,S Yasaei,Z Tabatabaei,F Rahmani-Shahriari
Journal of Shahid Sadoughi University of Medical Sciences , 2013,
Abstract: Introduction: It is important to predict mesiodistal crown width of the unerupted permanent canine and premolars in the mixed dentition, which helps to better determine malocclusion and its further development. Methods: In this study, 120 pair of dental study casts, belonged to subjects aged between 12-30 years, were selected and measured in the most mesiodistal width of permanent canines and premolars of both jaws, lower permanent incisors, and first upper permanent molars with the accuracy of 0/01 mm. Mesiodistal width of permanent canine and premolars in upper and lower jaws were estimated by new formula based on the permanent first upper molars and lower central incisors and then were compared with Tanaka-johnson formula. Results: The actual mean for sum of the mesiodistal width of permanent canines and premolars in the upper jaw was 21/22 mm and in the lower was 20/98 mm. The mean for sum of mesiodistal permanent canine and premolars were estimated by new formula in upper and lower jaw as 21/64 mm and 21/69 mm respectively. On the other hand, via Tanaka-Johnson formula, the predictions in upper and lower jaw were 22/41 mm and 21/92 mm respectively. Statistical analyses by means of ANOVA and Pearson correlation test revealed significant differences (P<0.001, r = 0.701). Conclusion: Sum of mesiodistal width of unerupted permanent canines and premolars teeth in the Iranian race (in Yazd) was estimated better using the new formula than applying the Tanaka Johnson formula, because of two following reasons: first, the new formula can be used at an earlier age and second, it has a higher accuracy.
Root Canal Morphology of Human Mandibular First Permanent Molars in an Iranian Population  [cached]
Shahriar Shahi,Hamid Reza Yavari,Saeed Rahimi,Reza Torkamani
Journal of Dental Research, Dental Clinics, Dental Prospects , 2008,
Abstract: Background and aims. The knowledge of variations in root canal morphology is critical for a successful endodontic treatment. The purpose of this study was to investigate variations in the root canal system of human mandibular first permanent molars in an Iranian population. Materials and methods. In this study, 209 mandibular first molar teeth were decalcified, dye-injected, and cleared in order to determine the number and configuration of the root canals. Results. The results demonstrated that 65.56% of the mandibular first molars under study had three, 31.57% had four and 2.87% had two canals. Conclusion. According to the results of this study and considering variations in the root canal systems of the mandibular first molars, it seems that great care should be taken in the root canal treatment of these teeth.
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