نتایج جستجو برای: primary teeth enamel

تعداد نتایج: 681275  

Journal: :Journal of oral science 2013
Yumiko Hosoya Katsumi Tadokoro Takashi Inoue Masashi Miyazaki Franklin R Tay

We evaluated the effectiveness of the experimental surface pre-reacted glass-ionomer coating (SI-R20401) to remineralize artificial enamel lesions in primary teeth. For each of 12 sound primary molars, five regions were assigned, based on whether enamel was unground or ground and whether PRG coating was applied. The teeth were demineralized in 10% EDTA for 7 h and lactic acid solution for 3 day...

Journal: :Pediatric dentistry 1988
L Bodner J Lustmann

A longitudinal complicated crown-root fracture of an unerupted permanent incisor following trauma to primary teeth is reported. The development of the affected permanent tooth was not disturbed during a follow-up period of six years. Traumatic injuries to primary teeth can be transmitted to the permanent dentition because of the close relationship between the apices of primary teeth and the dev...

2014
Vijaya Lakshmi Mudumba Radhika Muppa NCH Srinivas Duddu Mahesh Kumar

OBJECTIVES The study is to evaluate changes in microhardness of enamel after exposure to acidic center filled chewing gum on primary and permanent teeth. METHODS Thirty primary and 30 permanent molar extracted teeth were painted with acid resistant varnish except a small window over buccal surface. Teeth were divided into four groups according to type of teeth and type of chewing gum (Center ...

Amir Shayegan Hamid Sharifi Hamidreza Poureslami, Niloofar Shadman Ramin Atash

Introduction: This study investigated the sealing ability of three different adhesives in primary bovine teeth. Methods: Facial and lingual class V cavities were prepared half in enamel and half in cementum, in 48 bovine primary mandibular incisors and randomly divided into three groups and each group divided to two subgroups. The tested adhesives were XPBond (XP), ClearfilS3 Bond (S3), and Xen...

ژورنال: مجله دندانپزشکی 2006
شفیعی, فرشته , مرتضوی, مهران , معمارپور, مهتاب ,

Background and Aim: Although the use of adhesive systems can be effective in decreasing microleakge, it is still a major problem in composite resin restorations. The aim of the present study was to evaluate the marginal sealing ability of resin composite restorations using four dentin bonding systems in both primary and permanent teeth. Materials and Methods: In this experimental study, one hun...

A Nozari, A Pour Hashemi, A Rahmati, MK Layeghnejad, S Zamaheni, Z Shamsaei,

  Objective: This study aimed to assess the destructive effects of citric acid, lactic acid and acetic acid produced from the fermentation of foods on primary teeth enamel.   Methods: This in vitro, experimental study was conducted on 24 sound primary teeth. The teeth were polished with a fine abrasive paper under running water. Tooth pieces measuring 3 × 4 × 3mm were cut out of the teeth and s...

2015
Elham Farokh Gisovar Nassim Hedayati Niloofar Shadman Leila Shafiee

BACKGROUND CPP-ACP (Phosphopeptide-Amorphous Calcium Phosphate) has an important role in caries prevention in pediatric patients. This study was done, because of the great use of CPP-ACP and the need for restoration for teeth treated with CPP-ACP as well as the importance of shear bond strength of adhesives in the success of restorations. OBJECTIVES This study aimed to evaluate the effect of ...

2013
Pernille E. Jacobsen Tine B. Henriksen Dorte Haubek John R. Østergaard

OBJECTIVE Some anti-epileptic drugs (AED) have well-known teratogenic effects. The aim of the present study was to elucidate the effect of prenatal exposure to AED and the risk of enamel defects in the primary and permanent dentition. METHODS A total of 38 exposed and 129 non-exposed children, 6-10 years of age, were recruited from the Aarhus Birth Cohort and the Department of Neurology, Vibo...

2014
Uri Zilberman Lippo Lasilla

Very few modalities can be used for restoring missing primary anterior teeth, although the impact of missing anterior teeth during early childhood can be harmful. In the permanent dentition the use of glass-fibers ribbon and composite materials are frequently used for restoring missing teeth with no or minimal preparation. The purpose of this study was to examine the possibility to use the glas...

2015

Introduction Hypoplasia is defined as a quantitative defect of enamel visually and is histomorphologically identified as an external defect involving the surface of the enamel and associated with reduced thickness of enamel (Ozturk et al, 2004).Turner's hypoplasia usually manifests as a portion of missing or diminished enamel, generally affecting one or more permanent teeth in the oral cavity. ...

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