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https://www.readbyqxmd.com/read/29223639/extensive-phenotyping-of-the-orofacial-and-dental-complex-in-crouzon-syndrome
#1
Alexander Khominsky, Robin Yong, Sarbin Ranjitkar, Grant Townsend, Peter J Anderson
OBJECTIVES: Fibroblast growth factor receptor 2 (FGFR2) C342Y/+ mutation is a known cause of Crouzon syndrome that is characterised by craniosynostosis and midfacial hypoplasia. Our aim was to conduct extensive phenotyping of the maxillary, mandibular and dental morphology associated with this mutation. MATERIALS AND METHODS: Morphometric data were obtained from 40 mice, representing two genotypes (Crouzon and wild-type) and two sexes (males and females) (n=10 in each group)...
October 27, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29208791/effect-of-temperature-on-film-thickness-of-two-types-of-commonly-used-luting-cements
#2
M Praveen Kumar, Reddy Priyadarshini, Yasangi M Kumar, K Shanthi Priya, Chunchuvyshnavi Chunchuvyshnavi, Harika Yerrapragada
AIM: The aim of this study is to evaluate the effect of temperature change on film thickness of both types of cements. MATERIALS AND METHODS: Totally, 60 samples were prepared with 10 in each subgroup, thus comprising 30 in each group. Materials tested were glass ionomer cement (GIC) type I and zinc phosphate type I. Samples were manipulated with manufacturer's instructions and tested according to American Dental Association (ADA) guidelines. RESULTS: The mean values of film thickness were recorded for both groups I and II...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29208401/survival-rates-from-fracture-of-endodontically-treated-premolars-restored-with-full-coverage-crowns-or-direct-resin-composite-restorations-a-retrospective-study
#3
Warattama Suksaphar, Danuchit Banomyong, Titalee Jirathanyanatt, Yaowaluk Ngoenwiwatkul
INTRODUCTION: The aim of the present study was to compare the survival rates against fracture of premolar endodontically treated teeth (ETT) restored with resin composite or crowns and to identify risk factors associated with the fracture. METHODS: Data from dental records and radiographs of premolar ETT with postendodontic restorations (ie, resin composite or crowns) were collected between 2012 and 2016 and selected following selected inclusion and exclusion criteria...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29207831/comparison-of-gingival-biotype-between-different-genders-based-on-measurement-of-dentopapillary-complex
#4
Aniruddha Joshi, Girish Suragimath, Sameer Anil Zope, S R Ashwinirani, Siddhartha A Varma
Introduction: Clinical and aesthetic outcomes after periodontal or implant surgical procedures are determined by anatomical and morphological characteristics of the gingiva like width of keratinized gingiva, thickness of gingiva and alveolar bone. Therefore, the knowledge of gingival biotype plays an important role in modifying the dental therapeutic procedures for the desired outcome and predictability. Aim: The aim of the present study was to assess and compare the gingival biotype among genders by clinical, photographic and radiographic parameters...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207804/an-evaluation-of-dental-crowding-in-relation-to-the-mesiodistal-crown-widths-and-arch-dimensions-in-southern-indian-population
#5
Partha Jyoti Das, Winniecia Dkhar, Abhimanyu Pradhan
Introduction: With the advancement in imaging technology, 3D dental computed tomography plays a very significant role in orthodontic treatment and diagnosis. Aim: To evaluate dental crowding in relation to the mesiodistal crown widths and arch dimensions and also to determine the differences of dental crowding among males and females, in Southern Indian population. Materials and Methods: A total of 132 subjects were divided into two groups: crowded and non-crowded, each comprising 66 subjects (33 males and 33 females), aged between 15 and 35 years, who were referred for computed tomography scan of brain to the radiology department, were selected...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29204275/fractography-of-clinically-fractured-implant-supported-dental-computer-aided-design-and-computer-aided-manufacturing-crowns
#6
Ulrich Lohbauer, Renan Belli, Marco S Cune, Ulf Schepke
Today, a substantial part of the dental crown production uses computer-aided design and computer-aided manufacturing (CAD/CAM) technology. A recent step in restorative dentistry is the replacement of natural tooth structure with pre-polymerized and machined resin-based methacrylic polymers. Recently, a new CAD/CAM composite was launched for the crown indication in the load-bearing area, but the clinical reality forced the manufacturer to withdraw this specific indication. In parallel, a randomized clinical trial of CAD/CAM composite crowns luted on zirconia implant abutments revealed a high incidence of failure within the first year of service...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/29199344/-eight-year-clinical-results-of-sla-surface-implant-for-dentition-defect
#7
Ming-Ming Ren, Li-Ping Liu, Zhong-Hao Liu
PURPOSE: To evaluate the clinical effect of titanium implants with SLA surface preparation for partial prostheses. METHODS: One hundred and ninety-one implants with SLA surface preparation were implanted in 130 patients with dentition defect who required dental repair at Yantai Stomatologic Hospital Implant Center. Successful rate of the implant, changes of soft and hard tissue around the implants as well as the stability of the superstructure were recorded and evaluated by regular clinical and X-ray examinations...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29197431/measuring-adherence-to-evidence-based-clinical-practice-guidelines
#8
Richard Clark, Utsana Tonmukayakul, Yvonne Mangan, Michael Smith, Mark Gussy, David Manton, Denise Bailey, Hanny Calache
OBJECTIVES: Dental Health Services Victoria publishes evidence-based clinical practice guidelines (CPGs) to assist public oral health practitioners to provide high-quality dental care. How well these CPGs are implemented into practice is unknown. The aim of this study was to assess adherence to selected CPGs. METHODS: An electronic auditing tool was developed using clinical indicators derived for "stainless steel crown (SSC)," "restorative care for children under general anesthetic (GA)," and "direct restorative materials" CPG...
December 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/29195815/polyetherketoneketone-pekk-a-framework-material-for-complete-fixed-and-removable-dental-prostheses-a-clinical-report
#9
Jonathan H Dawson, Bart Hyde, Mitch Hurst, Bryan T Harris, Wei-Shao Lin
This clinical report demonstrates the use of polyetherketoneketone (PEKK) as a framework material with individually luted heat-pressed lithium disilicate glass-ceramic crowns for an implant-supported complete fixed dental prosthesis (ICFDP) and a conventional complete removable dental prosthesis (CRDP). This prosthesis design provides a non-computer-aided design and computer-aided manufacturing (CAD-CAM) option for the fabrication of ICFDPs and CRDPs with individualized ceramic crowns for optimal esthetics...
November 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29194830/effect-of-intraoral-mechanical-cleaning-techniques-on-bond-strength-of-cast-crowns-to-metal-cores
#10
Sahar AlZain, Mathew T Kattadiyil, Abdulaziz AlHelal, Ali Alqahtani
PURPOSE: To evaluate the effect of cleaning of metal cores from provisional cement, using an intraoral airborne-particle abrasion method, on the bond strength of permanent resin cement with cast crowns to cores. MATERIALS AND METHODS: Thirty stainless steel models of a standard complete crown tooth preparation were fabricated. Thirty Type III gold crowns were fabricated. Each cast crown corresponded to one stainless steel crown preparation model. All crowns were cemented with noneugenol zinc oxide cement and stored for 7 days at 37°C...
November 30, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29192629/prevalence-of-traumatic-dental-injuries-and-associated-factors-among-8-to-12-years-old-schoolchildren-in-diyarbakir-turkey
#11
E C Tumen, I Yavuz, S Kaya, E Uysal, D S Tümen, Y Ay, G Başaran, Ö Adıgüzel, Y Değer, N Laçin
BACKGROUND AND OBJECTIVES: This study aimed to assess the prevalence of traumatic injuries of the permanent incisors in public primary schoolchildren from 8 to 12 years old in South-Eastern Anatolia, Turkey. Additionally, the relationship between traumatic dental injuries, parents' education level, family income, size of incisal overjet and the presence of anterior open bite were examined. MATERIALS AND METHODS: Data were collected through oral examinations and structured interviews, and included socio-economic indicators...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29192202/reassessment-of-fluctuating-dental-asymmetry-in-down-syndrome
#12
Marcos Matabuena Rodríguez, Pedro Diz Dios, Carmen Cadarso-Suárez, Márcio Diniz-Freitas, Mercedes Outumuro Rial, Maria Teresa Abeleira Pazos, Jacobo Limeres Posse
Fluctuating dental asymmetry (FDA) is a tool to measure developmental stability that could be increased in gonosomal aneuploidies. The aim of this study was to quantify FDA in individuals with Down syndrome (DS). The study group comprised 40 individuals with DS, and a control group matched for age and sex was created. The target teeth were the maxillary central incisors (11,21), maxillary lateral incisors (12,22), maxillary canines (13,23), and maxillary first molars (16,26). Dental morphometric variables measured on CBCT images included tooth length, crown height, root length, mesio-distal diameter, crown-to-root ratio, vestibular-palatine diameter, mid mesio-distal diameter, mid buccal-palatal diameter, maximum buccal-palatal diameter, and cervical circumference...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29188699/ceramic-fracture-in-metal-ceramic-restorations-the-aetiology
#13
Ayesha Aslam, Danish Azeem Khan, Syed Hammad Hassan, Bilal Ahmed
All dental restorations are liable to failure during function. Failure could be biologic, aesthetic, mechanical or a combination. Ceramic restorations in particular, including metal-ceramics, are prone to mechanical fracture, especially the fracture of veneering porcelain. Fracture of a metal-ceramic restoration jeopardizes function as well as aesthetics. It is equally onerous to manage for both patient and dentist. Optimal management of such cases requires a detailed knowledge of the aetiology behind this phenomenon...
May 2017: Dental Update
https://www.readbyqxmd.com/read/29187780/the-skull-of-epidolops-ameghinoi-from-the-early-eocene-itabora%C3%A3-fauna-southeastern-brazil-and-the-affinities-of-the-extinct-marsupialiform-order-polydolopimorphia
#14
Robin M D Beck
The skull of the polydolopimorphian marsupialiform Epidolops ameghinoi is described in detail for the first time, based on a single well-preserved cranium and associated left and right dentaries plus additional craniodental fragments, all from the early Eocene (53-50 million year old) Itaboraí fauna in southeastern Brazil. Notable craniodental features of E. ameghinoi include absence of a masseteric process, very small maxillopalatine fenestrae, a prominent pterygoid fossa enclosed laterally by a prominent ectopterygoid crest, an absent or tiny transverse canal foramen, a simple, planar glenoid fossa, and a postglenoid foramen that is immediately posterior to the postglenoid process...
2017: Journal of Mammalian Evolution
https://www.readbyqxmd.com/read/29187175/standards-for-permanent-tooth-emergence-in-czech-children
#15
Romana Šindelářová, Lucie Žáková, Zdeněk Broukal
BACKGROUND: The aim of this study is to develop a population-specific reference for permanent tooth emergence among 4-15 years old Czech Republic children. The reference derived from this sample population are essential for pediatric dental diagnostics, orthodontic treatment planning, as well as anthropological and forensic applications. METHODS: In this cross-sectional epidemiological survey, dental examinations of 1,370 Czech children (696 girls (50,8%) and 674 boys (49,2%), whose parents or legal guardians all signed informed consent forms) from 11 elementary schools and kindergartens were performed in the classroom...
November 29, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29182488/the-influence-of-prosthesis-design-on-the-outcomes-of-tooth-implants-immediately-placed-and-loaded-by-means-of-one-piece-titanium-restoration
#16
Paolo Toti, Simone Marconcini, Enrica Giammarinaro, Giorgio Pedretti, Antonio Barone, Ugo Covani
Our purpose was to evaluate the occurrence of complications, and the degree of bone loss in a cohort of patients treated with fixed prostheses supported by immediately loaded dental implants. The primary aim was to compare partial versus full-arch Fixed Dental Prostheses. We then tested the effect of sinus lifting. In the present retrospective cohort study, the patients had their implants restored with Fixed Dental Prostheses supported by dental implants positioned in the posterior maxilla and mandible. When necessary, the maxillary sinuses were grafted with particulate autogenous bone...
November 28, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29179382/guidelines-for-the-management-of-traumatic-dental-injuries-1-fractures-and-luxations-of-permanent-teeth
#17
Anthony J Diangelis, Jens O Andreasen, Kurt A Ebeleseder, David J Kenny, Martin Trope, Asgeir Sigurdsson, Lars Andersson, Cecilia Bourguignon, Marie Therese Flores, Morris Lamar Hicks, Antonio R Lenzi, Barbro Malmgren, Alex J Moule, Yango Pohl, Mitsuhiro Tsukiboshi
Traumatic dental injuries (TDIs) of permanent teeth occur frequently in children and young adults. Crown fractures and luxations are the most commonly occurring of all dental injuries. Proper diagnosis, treatment planning and followup are important for improving a favorable outcome. Guidelines should assist dentists and patients in decision making and for providing the best care effectively and efficiently. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions...
September 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/29172329/treatment-planning-for-mandibular-third-molars
#18
James Barraclough, Andrew Power, Amit Pattni
NICE guidance for mandibular third molars has been available since 2000. This was set up to limit the surgical treatment of these teeth to symptomatic patients. There are numerous risks involved with surgical treatment of mandibular third molars and these should be explained in detail to the patient. Common and serious complications of mandibular third molar surgery are damage to the inferior alveolar and lingual nerve. Predicting the risk of inferior alveolar nerve injury is useful for treatment planning. The orthopantomogram (OPT) is the baseline special test for assessing this and numerous signs on an OPT can predict an increased risk of injury to the nerve...
March 2017: Dental Update
https://www.readbyqxmd.com/read/29169512/radiation-related-caries-assessment-through-the-international-caries-detection-and-assessment-system-and-the-post-radiation-dental-index
#19
Natalia Rangel Palmier, Ana Carolina Prado Ribeiro, Jéssica Montenegro Fonsêca, João Victor Salvajoli, Pablo Agustin Vargas, Marcio Ajudarte Lopes, Thaís Bianca Brandão, Alan Roger Santos-Silva
OBJECTIVE: Although radiation-related caries (RRC) are a well-known toxicity of head and neck radiotherapy, a clinical classification system for RRC has not yet been clinically validated. Therefore, the aim of this study was to assess whether the International Caries Detection and Assessment System (ICDAS) and the Post-Radiation Dental Index (PRDI) were viable methods for the assessment of RRC. STUDY DESIGN: Clinicopathologic data and intraoral digital photographs of 60 patients (833 teeth) affected by RRC were assessed and classified according to the ICDAS and PRDI criteria...
December 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29162890/reconstructing-molar-growth-from-enamel-histology-in-extant-and-extinct-equus
#20
Carmen Nacarino-Meneses, Xavier Jordana, Guillem Orlandi-Oliveras, Meike Köhler
The way teeth grow is recorded in dental enamel as incremental marks. Detailed analysis of tooth growth is known to provide valuable insights into the growth and the pace of life of vertebrates. Here, we study the growth pattern of the first lower molar in several extant and extinct species of Equus and explore its relationship with life history events. Our histological analysis shows that enamel extends beyond the molar's cervix in these mammals. We identified three different crown developmental stages (CDS) in the first lower molars of equids characterised by different growth rates and likely to be related to structural and ontogenetic modifications of the tooth...
November 21, 2017: Scientific Reports
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