A morphologic and anatomic evaluation of furcation area in the upper and lower first molars

نویسندگان

  • Ashtari, Shadi
  • Hafezibakhtiari, Maryam
  • Ketabi, Mohammad
چکیده مقاله:

A morphologic and anatomic evaluation of furcation area in the upper and lower first molars Dr. V. Esfahanian* - Dr. M. Ketabi* - Dr. M. Hafezibakhtiari** - Dr. SH. Ashtari** *- Assistant Professor of Periodontics Dept. - Faculty of Dentistry – Isfahan Islamic Azad University (Khorasgan). **- Dentist. Background and Aim: Microbial plaque has been recognized as the main cause of periodontal diseases. The anatomy and morphology of the furcation area may favour plaque accumulation. The aim of this study was to evaluate the upper and lower first molars morphologically and anatomically. Materials and Methods: In this this descriptive study, 151 upper first molars and 222 lower first molars were randomly collected and measured regarding root trunk length, diameter of furcation entrance and degree of root concavity. Results: In lower molars, the averages of furcation entrance and root trunk diameter were more in buccal than lingual aspect (0.53 mm vs. 0.49 mm and 4.28 mm vs. 2.94 mm). The average concavity of mesial was more than distal root (0.98 mm vs. 0.54 mm) in lower molars. In upper molars, the average of distal furcal entrance was the most (0.72 mm) whereas the buccal furcal entrance diameter was the least (0.54 mm). In addition, the average root trunk was more in mesial (3.22 mm) than buccal (2.74 mm) and distal (2.93 mm) surfaces. The average concavity of mesial root was the most (0.25 mm) whereas palatal and distal roots had some degrees of concavity as 37.7% and 8%, respectively. Conclusion: The furcation areas of the first molars, in most cases, can not be thoroughly cleaned with the blade of conventional curettes. Key words: First upper molar – First lower molar – Furcation – Furcal entrance – Root trunk – Root concavity.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

efl students gender and socioeconomic status: the use of politeness strategies in the first and second languages

within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...

the survey of the virtual higher education in iran and the ways of its development and improvement

این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.

the evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology

abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...

15 صفحه اول

a fundamental study of "histiriographic metafiction", and "literary genres", as introduced in "new historical philosophy", and tracing them in the works of julian barnes.

abstract a fundamental study of “historio-graphic metafiction” and “literary genres”, as introduced in “new historical philosophy”, and tracing them in the works of julian barnes having studied the two novels, the porcupine and arthur & george, by julian barnes, the researcher has applied linda hutcheon’s historio-graphic metafictional theories to them. the thesis is divided into five cha...

15 صفحه اول

the analysis of the role of the speech acts theory in translating and dubbing hollywood films

از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...

15 صفحه اول

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 18  شماره 1

صفحات  13- 20

تاریخ انتشار 2006-04

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

کلمات کلیدی

کلمات کلیدی برای این مقاله ارائه نشده است

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023