نتایج جستجو برای: total bolton index

تعداد نتایج: 1136254  

Journal: :journal of dental research, dental clinics, dental prospects 0
asghar ebadifar shahid beheshti university of medical sciences rojin taliee

background and aims. the correct relationship of the total mesiodistal width of the mandibular teeth to that of the maxillary teeth (bolton’s ratios) is among the main factors considered in obtaining an optimal occlusion. the present study was conducted to determining the bolton’s ratios before and after treatment in skeletal class i patients. materials and methods. in this descriptive analytic...

2013
Asghar Ebadifar Rojin Taliee

BACKGROUND AND AIMS The correct relationship of the total mesiodistal width of the mandibular teeth to that of the maxillary teeth (Bolton's ratios) is among the main factors considered in obtaining an optimal occlusion. The present study was conducted to determining the Bolton's ratios before and after treatment in skeletal class I patients. MATERIALS AND METHODS In this descriptive analytic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم 1392

سازند پابده در برش دره شهر شامل 260متر شیل، شیل آهکی، مارن و آهک می باشد. مطالعات انجام شده بر روی فرامینیفرهای پلانکتون منجر به شناسایی و ارائه تعداد 12 بیوزون شده است. این بیوزون ها عبارتند از: بیوزون شماره یک: parasubbotina pseudobulloides partial-range zone ، بیوزون شماره دو: subbotina triloculinoides partial-range zone، بیوزون شماره سه: morozovella angulata partial-range zone ، بیوزون شمار...

2014
Edoardo Sicurezza Giuseppe Palazzo

Study background: Bolton Index is one of the most commonly used analysis in order to evaluate tooth-size discrepancy. Even if this measure could represent an important tool in clinical practice, many Authors questioned its widespread applicability. The aim of this study was to compare the anterior and total tooth width ratios of an orthodontic population with the Bolton standards and analyse di...

Journal: :Stomatologija 2005
Ale Gaidyte Diana Baubiniene Dalia Latkauskiene

The purpose of this study is to determine the influence on four premolar extractions for upper and lower anterior tooth size discrepancy (for total Bolton index (TBI=Overall ratio) and for Bolton value (BV)) and to find out the differences of four first and second premolar extractions tooth size discrepancies (TSD). 148 pretreatment dental casts have been examined. It has been determined that u...

Journal: :The journal of contemporary dental practice 2005
Laila Baidas Hayder Hashim

The purpose of this study is to compare the anterior tooth size width in patients with congenitally missing maxillary lateral incisors using the Bolton Index and divine proportion. The study sample consisted of thirty pairs of orthodontic models with unilateral (twelve patients; 7 females, 5 males) and bilateral (eighteen patients; 13 females, 5 males) absence of maxillary lateral incisors. The...

2013
Siamak Sabour Elahe Vahid-Dastjerdi

We were interested to read the paper by Tarazona B, and colleagues published in the May 2012 issue of Med Oral Patol Oral Cir Bucal. The authors aimed to evaluate the reliability and reproducibility of calculating the Bolton Index using cone-beam computed tomography (CBCT), and to compare this with measurements obtained using the 2D Digital Method. They report by determining the regression line...

Journal: :World journal of orthodontics 2010
Renata Pilli Jóias Leandro Gonçalves Velasco Marco Antonio Scanavini André Luis Ribeiro de Miranda Danilo Furquim Siqueira

AIM To evaluate the Bolton ratios in Brazilians with natural, normal occlusions. METHODS Thirty-five dental casts of Brazilian Caucasians with a natural, normal occlusion from the files of the Postgraduate Program in Orthodontics of the Methodist University of São Paulo were scanned in three dimensions. On the scanned images, the greatest mesiodistal distance of each tooth from right first mo...

Journal: :Medicina oral, patologia oral y cirugia bucal 2011
Mojgan Kachoei Mohammad-Hosein Ahangar-Atashi Sohrab Pourkhamneh

OBJECTIVES The aims of the present study were to determine anterior and total tooth-width ratios in a representative Iranian sample in Tabriz city and compare them with the Bolton standards. STUDY DESIGN A total of 54 Iranian schoolchildren (12-14 years old) in Tabriz were examined. Alginate impressions were taken for subjects and poured by the dental stone. The mesiodistal widths of the teet...

Journal: :Stomatologija 2014
Egle Lapenaite Kristina Lopatiene

OBJECTIVE Interproximal enamel reduction is a part of orthodontic treatment for gaining a modest amount of space in the treatment of crowding. Today interproximal enamel reduction has become a viable alternative to the extraction of permanent teeth, and helps to adjust the Bolton Index discrepancy. The aim of the study is to evaluate various interproximal enamel reduction techniques, its indica...

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