نتایج جستجو برای: enamel defects

تعداد نتایج: 143497  

2016
Asmaa Alkhtib Aghareed Ghanim Meredith Temple-Smith Louise Brearley Messer Marie Pirotta Michael Morgan

BACKGROUND Dental caries is the most prevalent chronic disease in early childhood in most communities worldwide. Several studies conducted in the Gulf Cooperation Council countries have documented a high prevalence of early childhood caries (ECC). To date, no studies have been conducted in Qatar to examine the prevalence of ECC and enamel developmental defects in preschool children. The present...

2009
Naser Asl Aminabadi Sina Ghertasi Oskouei Firoz Pouralibaba Zahra Jamali Farzaneh Pakdel

BACKGROUND AND AIMS The objectives of the present study were to investigate the prevalence and the position of enamel defects of primary teeth and hence to estimate the approximate time of an insult. MATERIALS AND METHODS 121 children aged 3 to 5 years were included in the study. The Modified Developmental De-fects of Enamel Index was used to diagnose and classify the defects. The defects wer...

Journal: :Cadernos de saude publica 2007
Rosana H Schlittler Hoffmann Maria da Luz R de Sousa Silvia Cypriano

The aim of this study was to determine the prevalence of hypoplasia, demarcated opacity and dental fluorosis among schoolchildren with deciduous and permanent dentition. The association between enamel defects and dental caries was also verified. The sample consisted of 624 schoolchildren aged 5 and 309 aged 12. The dmft and DMFT indexes were used to assess dental caries prevalence, DDE to asses...

2014
Michel Goldberg O. Kellermann S. Dimitrova-Nakov Y. Harichane A. Baudry

In the field of dentistry, the murine incisor has long been considered as an outstanding model to study amelogenesis. However, it clearly appears that enamel from wild type mouse incisors and molars presents several structural differences. In incisor, exclusively radial enamel is observed. In molars, enamel displays a high level of complexity since the inner part is lamellar whereas the outer e...

Journal: :Dental traumatology : official publication of International Association for Dental Traumatology 2013
Anne B Skaare Anne-Lise Maseng Aas Nina J Wang

UNLABELLED Trauma to primary teeth may cause mineralization disturbances in the permanent successors. OBJECTIVE To study the distribution and type of enamel defects in permanent incisors after trauma to primary teeth and to examine inter-observer agreement when registrations were based on photographs. MATERIAL AND METHODS Of 266 children who suffered an oral injury to primary teeth in one c...

2012
Vanessa Resende Nogueira CRUVINEL Danuze Batista Lamas GRAVINA Tatiana Degani Paes Leme AZEVEDO Catharina Siqueira de REZENDE Ana Cristina Barreto BEZERRA Orlando Ayrton de TOLEDO

OBJECTIVES The aim of this study was to evaluate the prevalence of enamel defects and their risk factors on primary and permanent dentitions of prematurely born children and full-term born children born at Regional Hospital of Asa Sul, Brasília, DF, Brazil. MATERIAL AND METHODS Eighty 5-10-year-old children of both genders were examined, being 40 born prematurely (G1) and 40 born full term (G...

Journal: :Archives of oral biology 2002
T King S Hillson L T Humphrey

Developmental disturbances that affect the secretion of enamel matrix can cause defective enamel structure. Linear hypoplasia is one type of enamel defect and manifests itself as a furrow that runs around the circumference of the tooth. Such defects range in size from the microscopic to those that are several millimetres wide. Enamel defects have been widely used by anthropologists for the inve...

Journal: :European journal of oral sciences 2006
Jung-Wook Kim James P Simmer Brent P-L Lin Figen Seymen John D Bartlett Jan C-C Hu

Amelogenesis imperfecta (AI) is a heterogeneous group of inherited defects in dental enamel formation. The malformed enamel can be unusually thin, soft, rough and stained. The strict definition of AI includes only those cases where enamel defects occur in the absence of other symptoms. Currently, there are seven candidate genes for AI: amelogenin, enamelin, ameloblastin, tuftelin, distal-less h...

Journal: :The Turkish journal of pediatrics 2008
Aysun Avşar Ayhan Gazi Kalayci

The aim of this study was to investigate the presence and distribution of developmental enamel defects and caries in children with celiac disease (CD) and compare the results obtained with those of a control group of children without CD. A total of 64 subjects (mean age 8.2 years) selected from patients diagnosed and treated for CD were studied. Sixty-four age/ sex-matched healthy children were...

Journal: :European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry 2005
R C Balmer D Laskey E Mahoney K J Toumba

AIM This was to study the prevalence of enamel defects and molar incisor hypomineralisation (MIH) in children attending Leeds Dental Institute (UK) and Westmead Dental Hospital, Sydney (Australia). METHODS Prospective dental examinations were carried out on 25 children referred to two orthodontic departments. A questionnaire was completed to obtain background information and about previous fl...

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