Oya Aktoren

Oya Aktoren
Istanbul University · Department of Pedodontics

PhD

About

53
Publications
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937
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Publications

Publications (53)
Presentation
OBJECTIVE This study aimed to compare the changes in wear and roughness values of fissure sealants with different compositions after aging procedures. METHOD Four different fissure sealant materials were used in the study: Aegis (Bosworth, USA) (Group A), Beautisealant (Shofu, Japan) (Group B), Clinpro (3M, USA) (Group C), and Ultraseal XT Hydro (U...
Article
In this case-control study, we aimed to investigate the specific oral pathogens potentially associated with the mobile microbiome in children with congenital heart disease (CHD). Caries, oral hygiene and gingival indices were evaluated in 20 children with CHD and a healthy control group, and venous blood samples and saliva were collected. Using qua...
Article
Full-text available
The aim of this study was to compare the aging effects on wear, surface roughness and microhardness of fissure sealants having varying contents. Four fissure sealant types were used in the study: Aegis (Bosworth, USA) (Group A), Beautisealant (Shofu, Japan) (Group B), Clinpro (3M, USA) (Group C), and Ultraseal XT/Hydro (Ultradent, USA) (Group U). H...
Article
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ANNE SÜTÜ ve DİŞ SAĞLIĞI Anne sütü bebeğin genel sağlığı açısından gerekli tüm besinsel değerleri içeren biyolojik bir besin kaynağıdır. Bu derlemede, anne sütünün içeriğinin tanımlanması ve diş sağlığına etkisini inceleyen güncel çalışmaların bildirilmesi amaçlanmıştır. Proteinler, lipitler, karbonhidratlar, vitaminler, mineraller, büyüme faktörle...
Presentation
OBJECTIVE: The aim of this study was to evaluate the thermocycling effect on microhardness of fissure sealants with different contents. METHODS: Four commercial pit and fissure sealants; Aegis (Bosworth, USA) (Group1), Beautisealant (Shofu, Japan) (Group 2), Clinpro (3M, USA) (Group 3) and Ultraseal XT Hydro (Ultradent, USA) (Group 4), were used in...
Poster
Management of Complex Odontoma in Pediatric Patient: A Case Report Introduction: Odontomas are lesions of the odontogenic origin consisting of enamel, dentin, cementum, and pulpal tissue, which are nonaggressive hamartomatous developmental malformation. Odontomas are usually asymptomatic and seen most commonly in association with unerupted teeth d...
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Objective The aim of this in vitro study was to assess the antimicrobial properties of newly formulated toothpastes (four toothpastes for adults and two toothpastes for kids/babies) and a mouthrinse. Materials and Methods Newly formulated six different toothpastes and one mouthrinse of a single brand and commercially available five toothpastes and...
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Hypohidrotic or anhidrotic ectodermal dysplasia (HED/EDA) is characterized by impaired development of the hair, teeth, or sweat glands. HED/EDA is inherited in an X-linked, autosomal dominant, or autosomal recessive pattern and caused by the pathogenic variants in 4 genes: EDA, EDAR, EDARADD, and WNT10A. The aim of the present study was to perform...
Article
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The objective of this in vitro study was to analyze and compare the biomimetic remineralizing efficacy of the self‐assembling peptide (P11‐4) with agents containing casein phoshopeptide‐amorhous calcium phosphate fluoride (CPP‐ACFP) and sodium fluoride (NaF) on artificial caries lesions using DIAGNOdent and micro‐computed tomography (μCT). Artifici...
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Aim:Turner syndrome (TS) is a genetic disorder caused by a numerical or structural aberration of the X chromosome, which is associated with a female phenotype. Concerning oral status, several studies have revealed that girls with TS have dental anomalies and periodontal problems. The aim of this study was to evaluate the effects of oral bacteria on...
Article
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Context: Knowledge of the microbial composition of abscessed primary tooth is limited. Aim: The aim was to investigate the presence of 10 oral bacterial species in samples from abscessed primary tooth root canals using microarray technology and to determine their association with clinical findings. Subjects and methods: The samples were collec...
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Introduction: Er:YAG laser is one of the most preferred laser types used in preparation of dental hard tissues. Since lased dentin surfaces have significantly different characteristics when compared to bur-prepared surfaces, adhesion performance of adhesive systems may differ, too. Microleakage is an important determinant in assessing the success o...
Article
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Tooth agenesis (TA), the failure of development of one or more permanent teeth, is a common craniofacial abnormality observed in different world populations. The genetic etiology of TA is heterogeneous; more than a dozen genes have been associated with isolated or nonsyndromic TA, and more than 80 genes with syndromic forms. In this study, we appli...
Article
Full-text available
Currently, electronic apex locators (EALs), presented as an alternative to conventional radiographs for determining the working length of root canals, has been increased for primary teeth, young permanent teeth and permanent teeth with progression in technology. The aims of this review study were to emphasize the importance of correctly determining...
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Tooth development is regulated by multiple genetic pathways, which ultimately drive the complex interactions between the oral epithelium and mesenchyme. Disruptions at any time point during this process may lead to failure of tooth development, also known as tooth agenesis (TA). TA is a common craniofacial abnormality in humans and represents the f...
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Objective The aim of this study was to evaluate and compare, both clinically and radiographically, the effects of calcium silicate-based materials (i.e., ProRoot MTA [PR-MTA], MTA-Plus [MTA-P], and Biodentine [BD]) and ferric sulfate [FS] in pulpotomy of primary molars. Materials and Methods In this randomized clinical trial, 29 healthy 5- to 7-ye...
Article
Aim: The purpose of this study was to analyze the presence of Aggregatibacter actinomycetemcomitans in saliva and cardiac tissue samples of children requiring cardiac surgery in Istanbul, Turkey. Subjects and Methods: Twenty-five patients (mean age: 6.24 ± 2.93) undergoing surgery for congenital heart defects (CHDs) and an age/gender-matched contro...
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Objective . The aim of this in vitro study was to evaluate the long-term fracture resistance of simulated human immature permanent teeth filled with BioAggregate ™ (BA), mineral trioxide aggregate (MTA), and EndoSequence® Root Repair Material (ERRM). Material and Methods . 40 teeth, simulated to average root length of 13 ± 1 mm (Cvek’s stage 3),...
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Background: Talon cusp is a rare dental anomaly characterized by a cusp-like projection, often including the palatal surface of the affected tooth. The aim of the present study was to investigate the prevalence and characteristics of talon cusps in a group of Turkish children. Materials and methods: The study population consisted of 14,400 subje...
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The principles of management of mandibular fractures differ in children when compared to adults and depend on the specific age-related status of the growing mandible and the developing dentition. This paper presents a case report with a complex facial trauma affecting the mandibular body and condyle region and dentoalveolar complex. Clinical examin...
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Dentigerous cysts (DCs) are benign odontogenic cysts that are associated with the crowns of permanent teeth. The purpose of this study is to describe the management of DCs in four children. Four boys aged between 7 and 9 years were referred to our clinics with the complaints of intraoral alveolar swelling or facial asymmetry on the affected area. T...
Article
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Objective: The purpose of this study was to investigate and compare the crystalline structures of recently released MTA Plus (MTA-P), MTA Angelus (MTA-A), DiaRoot BioAggregate (BA) by X-ray diffraction (XRD) analysis. Materials and Methods: Phase analysis was carried out on powder and set forms of tested materials. The powder specimens placed into...
Article
Turkish twin brothers affected with hereditary sensory and autonomic neuropathy type IV (HSAN IV) are reported. Their clinical findings were generally typical for HSAN IV. Interestingly they both had preserved periodontal sensation. Mutation analysis of the NTRK1 gene showed a homozygous c.2001C>T substitution in exon 15 in both twins. This base su...
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The prevalence of Streptococcus mutans serotype k, which was speculated that might be associated with the development of cardiovascular diseases, has been reported in adult cardiovascular surgery patients. There is no information about presence of serotype k in children with cardiac disease. The aim of this study was to determine the salivary preva...
Conference Paper
Objective: The purpose of this study was to assess the oral health status and preventive care attitudes of children with congenital heart disease (CHD) requiring cardiac surgery in Istanbul, Turkey. Method: 25 children with CHD (mean age:6.24±2.93) undergoing cardiac surgery in Dept.of Cardiovascular Surgery,Institude of Cardiology,Istanbul Univers...
Conference Paper
Objective: The aim of this study was to assess the antimicrobial activity of different mouthwashes and toothpastes on pathogenic oral microorganisms of Streptococcus mutans and Candida albicans. Method: Over the counter mouthwashes and toothpastes containing different ingredients (natural substances, plant extracts and other) were evaluated for t...
Article
The aim of this study was to evaluate the shear bond strength (SBS) of a microhybrid composite resin bonded with three different adhesive systems to Er:YAG laser- (EL) or bur-prepared dentin surfaces and to analyze the quality and ultrastructure of the adhesive–dentin interfaces by scanning electron microscopy (SEM). The specimens prepared for SBS...
Article
Cherubism (MIM no. 118400) is a rare autosomal dominant disorder characterized by bilateral multilocular lesions of the upper and lower jaws. The lesions usually manifest clinically during early childhood, progress until puberty, and regress in adulthood. SH3BP2 is the only gene currently known to be associated with cherubism. This study began with...
Article
Full-text available
Dentigerous cysts are benign odontogenic cysts that are associated with the crowns of permanent teeth. They are usually characterized as unilocular radiolucent lesions and are rarely seen during childhood. The purpose of this article was to report the case of a 6-year-old girl with a dentigerous cyst associated with the tooth buds of premolars. The...
Article
Unlabelled: Abstract - Background: The aim of this in vitro study was to assess the long-term fracture resistance of human immature permanent teeth filled with BioAggregate (BA), mineral trioxide aggregate (MTA) and calcium hydroxide (CH). Materials and methods: The study consisted of single rooted premolar teeth with immature root formation ext...
Article
The purpose of this study was to evaluate the total success rates of mineral trioxide aggregate (MTA), ferric sulfate (FS), and formocresol (FC) as pulpotomy agents in primary molars. A randomized, split-mouth study design was used in 32 healthy 5- to 7-year-old children with 128 carious primary molars without clinical or radiographic evidence of p...
Conference Paper
Objectives: The purpose of this study was to assess the microleakage of three different adhesive systems in Er:YAG laser and bur prepared cavities.Methods: Class V cavities prepared on buccal surfaces of 80 extracted third molars with Er:YAG laser(Fidelis Plus III,Fotona) or diamond bur were randomly assigned to 8 groups (n=10): Group1:Er:YAG laser...
Conference Paper
Objectives: The aim of this study was to evaluate the shear bond strenghts (SBS) of three different adhesive systems to Er:YAG laser and bur prepared dentin surfaces. Methods: 80 extracted noncarious third molars were embedded in resin; flat labial dentin surfaces were prepared and wet-ground with 600 grit SiC paper. Specimens were randomly assigne...
Article
This study was designed to determine the type and amount of the monomers leached from the different particle sizes of the composite materials. Three different disk sizes (2, 4, 6 mm) prepared for each material group (Filtek Flow, Filtek A110, Filtek P60 and Filtek Supreme) were polymerised by LED and halogen light; the specimens were then placed in...
Conference Paper
Objective: The aim of the study was to assess the caries risk of children with congenital heart disease. Methods: A total of 40 children with congenital heart disease (mean age:10.002.66) attended to the Clinics of Paediatric Dentistry, Istanbul University, were evaluated. The caries indices for primary and permanent teeth were assessed according t...
Conference Paper
Objective: The aim of this study is to assess the antimicrobial efficacy of ozone on an in vitro Zurich biofilm model. Methods: Multispecies Zurich biofilm model consisting of Streptococcus oralis, Streptococcus sobrinus, Veillonella dispar, Actinomyces naeslundii, Fusobacterium nucleatum and Candida albicans was developed on hydroxyapatite discs (...
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Among various dental materials and their successful applications, a dental implant is a good example of the integrated system of science and technology involved in multiple disciplines including surface chemistry and physics, biomechanics, from macro-scale to nano-scale manufacturing technologies and surface engineering. As many other dental materi...
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Full-text available
The purpose of this study was to determine the time of the eruption of the first primary tooth (FPT) in infants and to assess the effects of neonatal factors on the timing of the eruption. The dental and medical records of healthy infants were reviewed to gather data on birth weight (BW), gestational age (GA), prenatal history, and the time of the...
Article
Hypohidrotic ectodermal dysplasia (HED) is an inherited disorder characterized mainly by hypotrichosis, hypohidrosis, a characteristic facial appearance, hypodontia/anadontia and malformed teeth. The aim of this study was to assess the pattern of missing teeth and tooth malformations in children affected with HED in Istanbul, Turkey. Clinical and r...
Conference Paper
Objective:The purpose of this study was to describe and analyze the dental emergencies in Paediatric Dentistry clinics of Istanbul University,Istanbul,Turkey. Methods:The dental records of 359 children visited the Pediatric Dentistry clinics of Istanbul University for emergent dental care between January and September 2008 were assessed. Data colle...
Conference Paper
Objective: The purpose of this prospective controlled clinical study was to assess the use of ozone with or without fissure sealants(FS) on initial pit and fissure caries in children. Methods:27 children with 4 non-cavitated lesions in permanent molars were enrolled.Teeth were cleaned;the severity of the lesions was determined by Clinical Severity...
Article
Hallermann-Streiff syndrome (HSS) is a rare congenital disorder characterized by significant craniofacial findings. Dyscephaly, microphthalmia, cataracts, hypotrichosis, cutaneous atrophy, thin pinched nose, and a typical bird-like face are the main features of the syndrome. Additional features of the syndrome include dental anomalies, micrognathia...
Article
Lacrimo-auriculo-dento-digital (LADD) syndrome is an autosomal dominantly inherited disorder characterized mainly by hypoplasia/aplasia of lacrimal and salivary tracts, small cup-shaped and/or malformed ears, sensorineuronal or conductive hearing loss, abnormalities of the teeth, and variable anomalies of the hands and feet. In this case report, ge...
Article
Full-text available
The purpose of this study is to examine the enamel hypoplasia in historic populations for the frequency type, number, localition, formation age and to evaluate the causal factors of hypoplasias in the biological environment and life conditions of that period. 478 primary and permanent teeth of individuals (5 adult males, 1 adult females 3 skeletons...
Article
Hypohidrotic ectodermal dysplasia (HED) is an inherited disorder characterized mainly by hypotrichosis, hypohidrosis, a characteristic facial appearance, hypodontia/anadontia and malformed teeth. The aim of this study was to assess the pattern of missing teeth and tooth malformations in children affected with HED in Istanbul, Turkey. Clinical and r...

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