جستجوی مقالات مرتبط با کلیدواژه « First Permanent Molar » در نشریات گروه « پزشکی »
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Background
The internet is an important tool; however, there are concerns about the quality and reliability of medicalinformation available online. This study aimed to evaluate the quality and reliability of internet information on fissure sealants with different toolkits.
MethodsThis study was conducted by searching the internet using the Google search engine with questions about fissure sealants. The first thirty websites in search results for each question were evaluated. Videos, duplicate websites, and advertisements were excluded. A total of 270 websites were evaluated by the Journal of American Medical Association (JAMA) Benchmark and Health on the Net Code of Conduct (HONcode) certification.
ResultsThe results revealed that 35.1% of the websites met JAMA authorship criteria, 19.3% met JAMA attribution criteria, 42.1% met JAMA disclosure criteria, and 19.3% of websites met JAMA currency criteria. The websites from the United States and Australian websites showed the highest JAMA authorship criteria scores, respectively. Moreover, 8.8% of websites met HONcode criteria. One information, two government, and two organization websites met the criteria of this certification. None of the private clinic websites met HONcode criteria.
ConclusionThis study showed that the quality and the reliability of web-based information on fissure sealants in pediatric patients are generally inadequate. Both physicians and website editors should be careful and attentive when sharing information on the Internet.
Keywords: first permanent molar, Root Canal Treatment, caries} -
Journal of Dentistry, Shiraz University of Medical Sciences, Volume:23 Issue: 1, Mar 2022, PP 20 -28Statement of the Problem
The first permanent molar (FPM) teeth are the most important elements of mastication and are crucial in the improvement of functionally proper occlusion. However, in childhood, these teeth are most susceptible to caries. The loss of an FPM in a child can cause changes in the dental arches. These changes can occur throughout a person’s life. In such cases, the dentists and dental specialists need to decide whether to preserve or extract the FPM.
PurposeThis study aimed to evaluate the extent of knowledge of dental specialists in Shiraz (Iran) on clinical guidelines for the preservation and extraction indications of FPMs.
Materials and MethodThe authors developed a dedicated questionnaire for the purpose of knowledge evaluation. A total of 6 orthodontists and 15 dental specialists, respectively confirmed the validity and reliability of the questionnaire. The 19-item questionnaire covered topics such as demographic data, preservation criteria for FPM teeth, and indications for FPM extraction. The survey was carried out across six dental disciplines in Shiraz (Iran) during July-August 2018. The data were analyzed using the SPSS software (version 22.0) with the dependent sample t test and one-way ANOVA. p Value< 0.05 was considered statistically significant.
ResultsOut of 89 dental specialists, 64 participants (53% male, 47% female) completed the questionnaire. The mean knowledge score for all participants was 10.09±3.93 (maximum of 19). The level of knowledge had a significant and inverse correlation with age (p< 0.001) and years of experience (p= 0.017). It also had a significant relationship with dental specialization (p< 0.001).
ConclusionThe overall level of knowledge of the specialists was insufficient, except for the pedodontists and orthodontists. A re-education training program for dental specialists is strongly recommended.
Keywords: Questionnaire, Survey, First Permanent Molar, Tooth Extraction, Knowledge} -
زمینه و هدفرویش نا بهجا اختلالی است که در آن دندان مسیر رویش معمولش را طی نکرده و در صورتی که به موقع تشخیص داده نشود، منجر به مشکلات اکلوژنی می شود. هدف از این مطالعه بررسی فراوانی رویش نا به جا در مولر اول و کانین دائمی در بیماران مراجعه کننده به دانشکده دندانپزشکی اردبیل بود.روش کاربا مشاهده رادیوگرافی های پانورامیک ثبت شده از سال 95 تا 97 فراوانی رویش نا به جای مولر اول دائمی در کودکان 5 تا 8 سال و کانین دائمی در کودکان 10 تا 13 سال مورد بررسی قرار گرفت. سپس توزیع فراوانی بر حسب جنسیت، فک درگیر و درگیری یک طرفه یا دوطرفه با استفاده از آزمون کای دو ارزیابی شد.یافته هافراوانی رویش نا به جای مولر اول دائمی 2/1 درصد و کانین دائمی 6/4 درصد به دست آمد. تفاوت معنیداری در فراوانی رویش نا به جای مولر اول بر حسب جنسیت بیمار (p=0/366)، فک درگیر (p=0/132) و درگیری یک طرفه یا دوطرفه ( p=0/366) وجود نداشت. تفاوتی در میزان فراوانی رویش نا به جای کانین دائمی بر حسب جنسیت بیمار (p=0/384) و درگیری یک طرفه یا دو طرفه (0/056p=) مشاهده نشد. رویش نا به جا در کانین دائمی در فک بالا بیشتر از فک پایین بود (p=0/012).نتیجه گیریفراوانی رویش نا به جا در مولر اول دائمی2/1درصد و کانین دائمی 6/4درصد و در محدوده مطالعات جوامع دیگر به دست آمد.کلید واژگان: رویش نا به جا, مولر اول دائمی, کانین دائمی, فراوانی}Background & objectivesEctopic eruption is a disorder in which the tooth does not follow its usual course and if not diagnosed in a timely manner, leads to occlusal problems. The aim of this study was to determine the frequency of ectopic eruption of the first permanent molar and canine in patients referred to Ardabil dental school.MethodsBy observing the panoramic radiographs, recorded from 2016 to 2017, the frequency of ectopic eruption of first permanent molars in children aged 5 to 8 years and permanent canine in children aged 10 to 13 years was determined. The frequency distribution based on sex, involved jaw, unilaterality and bilaterality were evaluated using Chi-Square test.Resultsthe frequency of ectopic eruption of the first permanent molar and permanent canine was 2.1% and 6.4% respectively. There was no significant difference in the frequency of ectopic eruption of the first molar, based on the patient's gender (p=0.366), jaw (p=0.132), and unilateral or bilateral involvement (p=0.366).Also, there was no significant difference between the frequency of ectopic eruption of permanent canine and the patient's gender (p=0.384), unilateral or bilateral involvement (p=0.056). The ectopic eruption of the permanent canine in the maxilla was greater than the mandible (p=0.012).ConclusionsIn this study, the frequency values of ectopic eruption were 2.1% and 6.4% for the first permanent molar and permanent canine respectively that were in the range of other studies reported from other populations.Keywords: Ectopic Eruption, First Permanent Molar, Permanent Canine, Frequency}
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زمینه و هدفمولرهای اول دائمی به دلیل شکل آناتومیک خاص، رویش زود هنگام و عدم اطلاع والدین از دائمی بودن آنها مستعد پوسیدگی هستند. این مطالعه به منظور تعیین شاخص پوسیدگی دندان مولر اول دائمی (DMF6) و برخی از عوامل مرتبط با آن در دانش آموزان انجام شد.روش بررسیاین مطالعه توصیفی تحلیلی روی 400 دانش آموز 12 ساله (200 دختر و 200 پسر) به روش نمونه گیری ترکیبی (طبقه ای و خوشه ای) از مدارس دولتی و غیردولتی در شهرستان گرگان طی سال های 95-1394 انجام شد. معاینه دندان مولر اول دائمی انجام گردید. سطح تحصیلات والدین، تعداد دفعات مسواک زدن و مصرف روزانه میان وعده های غذایی حاوی مواد قندی در پرسشنامه ای ثبت شد. به هر دندان مولر اول دائمی پوسیده، کشیده و پرشده عدد یک داده شد. این اعداد برای محاسبه شاخص DMF6 در هر فرد با هم جمع شدند.یافته هاشاخص DMF6 مساوی صفر در 19.5% و شاخص DMF6 با مقادیر یک الی چهار در 80.5% از کودکان تعیین شد. میانگین شاخص DMF6 2.23+-0.07 و به طور معنی داری در دخترها 2.39+-0.10 بیش از پسرها 2.07+-0.11 بود (P<0.05). با افزایش سطح تحصیلات پدر و مادر و تعداد دفعات مسواک زدن و کاهش مصرف میان وعده های قندی، شاخص DMF6 کاهش یافت.نتیجه گیریوضعیت پوسیدگی در دانش آموزان 12 ساله گرگان بیشتر از حد استاندارهای جهانی تا سال 2020 بود. جنس کودک، میزان تحصیلات والدین، تعداد دفعات مسواک زدن و مصرف میان وعده های قندی نقش مهمی در میزان پوسیدگی دندان دارند.کلید واژگان: شاخص DMF, مولر اول دائمی, مسواک زدن, میان وعده های غذایی حاوی مواد قندی}Background And ObjectivePermanent first molars are susceptible to caries due to their particular anatomical form, early development and lack of knowledge of parents about their permanence. This study was conducted to determine the index of first permanent dental careis (DMF6) and some of its related factors in 12 year-old students.MethodsThis descriptive-analytical study was carried out on 400 students (200 females and 200 males) using combined method (stratified and cluster sampling) from public and non-governmental schools in Gorgan, northern Iran during 2015-16. First permanent molar examination was carried out. The parent's education level, frequency of toothbrushing and daily consumption of sugar-containing snack foods was recorded in a questionnaire. Each decayed, missing and filled first permanent molar tooth was given number one. These numbers were combined to compute the DMF6 index for each individual.ResultsThe DMF6 index was zero in 19.5% and the DMF6 index was determined to be between 1 and 4 in 80.5% of the children. The mean DMF6 index was 2.23±0.07 and significantly higher in girls (2.39±0.10) than in boys (2.07±0.11) (PConclusionDental caries prevalence among 12-years-old students in north of Iran is higher (2.23) than global standard until 2020 (lower than 1). Gender of child, parents education, frequency of toothbrushing and consumption of sugar-containing snack foods plays an important role in the rate of dental caries.Keywords: DMF index, First permanent molar, Toothbrushing, Sugar-containing snack foods}
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زمینه و هدفمیزان فزاینده ی بروز پوسیدگی های شیارها به احتمال زیاد مربوط به کاهش شیوع پوسیدگی در سطوح بین دندانی می باشد. هدف از این مطالعه بررسی تاثیر ماده فیشورسیلانت در کاهش پوسیدگی دندانهای مولر اول دائمی و بررسی ماندگاری این ماده در زمانهای مختلف می باشد.مواد وروش هادر این مطالعه تجربی 30 نفر از کودکان 9-6 ساله که دارای دو دندان مولر اول دائمی سالم بودند انتخاب شدند. یکی از دندانها بعنوان شاهد انتخاب شد و بر روی دندان دیگر ماده فیشورسیلانت قرار گرفت. بعد از 6و12 ماه میزان پوسیدگی و ماندگاری ماده فیشورسیلانت بررسی شد. ماده مورد استفاده در این تحقیق سیلانت با مارک (Deguseal) بود و ایزولاسیون با رابردام انجام شد. روش تجزیه و تحلیل داده ها توسط نرم افزار رایانه ای SPSS و با استفاده از آزمون (کای دو) بود.یافته هاپس از 6 ماه 20% از دندانهای شاهد پوسیده شده بودند. میزان پوسیدگی دندانهای فیشور سیلانت شده در این مدت 3/ 3% بود. بعد از 12 ماه میزان پوسیدگی دندانهای شاهد 6/ 26% و پوسیدگی دندانهای سیلانت شده در این مدت 6/6% بود (p value<0.001). میزان گیر کامل ماده فیشور سیلانت در همین زمانها به ترتیب 3/ 93 % و 90% بود (p value<0.001).نتیجه گیریفیشورسیلانت های جایگذاری شده توسط کارکنان دندانپزشکی درست آموزش دیده در پیشگیری از پوسیدگی فرورفتگی ها و شیارهای سطوح در معرض خطر ایمن موثر و سودمند هستند. موثر بودن این ماده با روش خوب جایگذاری و پیگیری مناسب و پوشاندن مجدد درصورت لزوم افزایش می یابد.
کلید واژگان: پوسیدگی, فیشور سیلانت, ماندگاری, مولراول دائمی}Background And AimsThe prevalence of occlusal caries in children is a significant dental health problem. The increased proportion of caries experience attributed to pit and fissure caries is most likely due to the decreasing prevalence of caries with inter proximal surfaces. The aim of this study is to evaluate the effects of fissure sealant material in the reduction of decay in first permanent molars and consideration of retention rate in different periods.Materials And MethodsIn this experimental study 30 children aged 6-9 that have two intact first molar selected. One tooth has chosen as a control tooth and the other teeth selected for fissure sealant. After 6 and 12 months the sealant retention and caries rate evaluated. The sealant material used for this study was Deguseal. Moisture control during placement was obtaining using ruberdam.ResultsAfter 6 months %20 of control teeth was decayed only 3/3% of sealant teeth decayed. After 12 months 26/6% control teeth was decayed but only 6/6% control teeth was decayed (p value<0.001). After months 93/3% completely retained fissure sealant 6/7% partially retained and after 12 months 90% completely retained and 10% partially retained (p value<0.001).ConclusionFissure sealants, placed by appropriately trained dental personnel, are safe, effective, and underused in preventing pit and fissure caries on at-risk surfaces-Effectiveness is increased with good technique and appropriate fallow up and resealing as necessary.Keywords: Decay, fissure sealant, retention, first permanent molar} -
Background And AimUnderstanding the properties of Stainless Steel Crowns from different manufacturers may be helpfull in choosing more appropriate treatment in restoration of the teeth of children and adolescents. The aim of this study was to determine the marginal circumference of SSC manufactured by 3M and MIB Company for primary and permanent teeth in different sizes and the ratio between them. Measuring the circumference of cervical margin of SSC and considering the percentage of reduced marginal circumference after crimping, can suggest some comments to dentists in order to choose an appropriate crown size. The wide range application of these crowns and the importance of their compliances with teeth were the main reason to designe a study measuring the marginal circumference of these crowns.Materials And MethodsIn this experimental study, several photographs were taken with a digital camera from cervical margins of 58 SSCs (3M and MIB) of permanent and deciduous molars considring determined distances and same conditions. Then the photos were cut by the same zoom and after dotting the cervical margins, the peculiarities of dots were inserted into ANSYS HFSS 12 software and the related SSCs were stimulated. Then, the marginal circumference of SSC were analyzed and compared with t-test.ResultsThe mean changes of marginal circumference from a number to a higher one were almost 4%. The total average ratio of marginal circumference of each number to a higher number was 0.96. The marginal circumference of 3M and MIB crowns were similar.Keywords: Stainless steel crowns, Circumference, Primary teeth, First permanent molar}
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Background And AimsThe first permanent molar is one of the most important teeth in the cycle of eruption. It can involve complication due to the time of eruption and its particular condition in the jaws. The purpose of this study was structural and healthy evaluation of the first permanent molar in school girls and boys in Mashhad in 1386.Materials and MethodsIn this cross-sectional study 700 school girls and boys were examined. The samples were selected in a cluster-stratified method. The different condition on the first permanent molar was registered in examination form. The results were statistically analyzed by Chi-Square and Kruscal Wallis tests.ResultsIn school girls, the statistical analysis showed a significant increase of decay, filling, extracted tooth, mesially drift, hypoplasia and hypo calcification of the first permanent molar in the lower jaw. Extrusion and erupting teeth were significantly higher in upper jaw. In school boys, the statistical analysis showed a significant increase of decay, filling, mesially drifts, and erupting teeth in the lower jaw. Extrusion was significantly higher in upper jaw. In contrast between two groups decay, extrusion, mesially drift, hypoplasia and hypo calcification of the first permanent molar were significantly higher in girls, but the amounts of fissure sealant was higher in boys. Decay, filling, extrusion were significantly increased by the age. The amounts of fissure sealant therapy among the teeth, which the treatment was necessary for them, were low in this study.ConclusionsBased on the results of the present study, high rate of decay, insufficient attention to dental prevention and noticeable amount of structural defects observed in permanent teeth in mixed dentition period, which needs more attention.Keywords: First permanent molar, school girls, DMFT}
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Background And AimThe aim of this study was to evaluate the retention and effectiveness of fuji III Glassinomer used as fissure sealant, on the prevention of occlusal of caries 5 years after placement.MethodsIn this Observation-descriptive study in 1382, 3915 permanent first molar (with deep occlusal pit and fissures and without caries) of 2142 students (6-12 years old) in Ardabil and Nir cities were treated as fissure sealant with Glass ionomer (Fuji III) by two dentist and supervision of one pedodontist. After one years, all patients were recalled and reevaluated but after 5 years only 442 Child with 690 teeth were recalled.ResultsIn this study, overall success of fissure sealant therapy after one year was was ٪83, and 5 years, almost ٪60. After 5 years among 182 persons that the occlusal surface of their left upper first molars were fissure sealant therapied, ٪49. 5 have suitable retention of fissure sealant, that ٪37 of them were female and ٪63 were male that considerable difference is available from point of type of sexs (P<0/05). Among 205 persons that the occlusal surface of their right upper first molars were fissure sealant therapied, ٪70. 7 have suitable retention that ٪43. 5 of them were female and ٪46. 5 were male. In 144 persons that the occlusal surface of their left lower first molar were treated by fissure sealant, ٪63. 2 have suitable retention that ٪58. 3 of them were female and ٪41. 7 were male. Finally among 159 persons that the occlusal surface of their lower first molars were fissure sealant therapied ٪52. 2 have suitable retention and ٪58. 4 of them were female and ٪41. 6 were male.ConclusionFissure sealant therapy by glass-ionomer is satisfactory in longtime prevention of occlusal Caries of first permanent molars.Keywords: First permanent molar, pit, fissure, sealant therapy, Glass, ionomer}
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مطالعات اپیدمیولوژیک نشان داده است که پوسیدگی یا «تخریب عفونی بافتهای سخت دندان» یکی از شایعترین عفونتها در انسان می باشد. چند مطالعه در ایران به بررسی این معضل بهداشتی پرداخته ولی هنوز به نتایج عملی مشخصی نرسیده است. در این تحقیق وضعیت دندانهای مولر اول فک بالا و پایین (که خود شامل چهار متغیر فرعی می باشد) مورد بررسی قرار گرفته است؛ به این منظور تعداد 1000 پرونده به روش انتخاب سیستماتیک از بین پرونده های بیماران سال 1376 در یک مطالعه توصیفی، تحلیلی و از نوع مقطعی گذشته نگر مورد بررسی قرار گرفت و اطلاعات مورد نظر در فرمهای از پیش طراحی شده وارد گردید و سپس با نرم افزار SPSS مورد تجزیه و تحلیل قرار گرفت. میانگین DMFT برای دندانهای مولر اول 0.50±3.47 (0.86=MT=1.23، FT=1.38، DT) به دست آمد؛ بطور کلی تعداد دندانهای کشیده شده فک پایین بیشتر از فک بالا و تعداد دندانهای پوسیده درمان نشده، در فک بالا بیشتر از فک پایین بود (P<0.001). نسبت DMFT دندانهای مولر اول به DMFT دندانها در حدود 29% بود؛ این امر نشانگر آن است که پوسیدگی و عوارض آن در دندانهای مولر اول بخش عمده ای از DMFT کل دهان را به خود اختصاص داده است؛ به همین دلیل آموزش بهداشت و سایر روش های پیشگیری و حل مشکل اقتصادی در خدمات دندانپزشکی لازم به نظر می رسد و پیشنهاد می شود آموزشهای ویژه ای در مورد نحوه رعایت بهداشت دهان به هنگام رویش مولرهای اول در سنین 6 تا 7 سالگی در اختیار افراد جامعه قرار گیرد.
کلید واژگان: DMFT, مولر اول دائمی, دانشگاه علوم پزشکی تهران}Epidemiologic studies have shown that caris or "infective damage of hard tissues in teeth" are the most common type of infection in human. In Iran, a few studies have investigated this hygienic problem, but no practical results have been defined yet. In this research, the conditions of the first upper and lower permanent molars (it contains four minor variables), have investigated. For this reason, in a descriptive analytic study, which was of retrospective and cross- sectional type, one thousand files were chosen systematically. The data were analysed by SPSS packages. The mean values of DMFT for permanent first molars were 3.47±0.50 (MT-1.23, FT=0.86, DT-1.38). The number of extracted teeth in mandible was moer than maxilla and the number of untreated caries teeth in maxilla was more than mandible (PO.001). DMFT ratio of the first molars to total DMFT, was approximately 29%, which indicates that caries and that complications on the first molars, make the main part of the overall DMFT. Therefore, hygiene training, preventive methods and the improvement of ecomonical status seem necessary in dental services.Keywords: DMFT, First Permanent Molar, Tehran University of Medical Sciences}
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