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https://www.readbyqxmd.com/read/28518181/a-semi-automatic-algorithm-for-preliminary-assessment-of-labial-gingiva-and-alveolar-bone-thickness-of-maxillary-anterior-teeth
#1
Sheng-Hung Chen, Hsun-Liang Chan, Yongning Lu, Sim-Heng Ong, Hom-Lay Wang, Eng Hong Ko, Po-Chun Chang
PURPOSE: Soft and hard tissue volumes are critical for implant placement and long-term stability. Although the literature has adequately addressed tissue biotypes of Western populations, pertinent information about Asian populations is limited. This study aimed to evaluate the soft and hard tissue profiles of the maxillary anterior teeth of the Taiwanese population using a semi-automatic algorithm. MATERIALS AND METHODS: Cone beam computed tomography images of 11 adults with well-aligned maxillary anterior teeth were overlaid with those of cast models, based on the tooth crowns manually outlined by two independent observers...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28515694/fam20a-gene-mutation-amelogenesis-or-ectopic-mineralization
#2
Guilhem Lignon, Fleur Beres, Mickael Quentric, Stephan Rouzière, Raphael Weil, Muriel De La Dure-Molla, Adrien Naveau, Renata Kozyraki, Arnaud Dessombz, Ariane Berdal
Background and objective:FAM20A gene mutations result in enamel renal syndrome (ERS) associated with amelogenesis imperfecta (AI), nephrocalcinosis, gingival fibromatosis, and impaired tooth eruption. FAM20A would control the phosphorylation of enamel peptides and thus enamel mineralization. Here, we characterized the structure and chemical composition of unerupted tooth enamel from ERS patients and healthy subjects. Methods: Tooth sections were analyzed by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-Ray Diffraction (XRD), and X-Ray Fluorescence (XRF)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28440007/spectrophotometric-analysis-of-fluorescent-zirconia-abutments-compared-to-conventional-zirconia-abutments-a-within-subject-controlled-clinical-trial
#3
Daniel S Thoma, Felix B Gamper, Vítor M Sapata, Giuseppe Voce, Christoph H F Hämmerle, Irena Sailer
BACKGROUND: Zirconia abutments are frequently used for implant-supported single crowns. Even though demonstrating esthetic benefits compared to metal abutments, zirconia abutments lead to an increased brightness of the peri-implant mucosa compared to natural teeth and are not ideal from an esthetic point of view. PURPOSE: To test whether or not a fluorescent hybrid zirconia abutment offers superior esthetics compared to a non-fluorescent one-piece zirconia abutment based on spectrophotometric analysis...
April 24, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28434556/cad-cam-techniques-help-in-the-rebuilding-of-ideal-marginal-gingiva-contours-of-anterior-maxillary-teeth-a-case-report
#4
Jiayue Yin, Dan Liu, Yuehua Huang, Lin Wu, Xiaolin Tang
BACKGROUND AND OVERVIEW: "Pink esthetics," which are considered to be as important as "white esthetics," have attracted increasing attention. To date, clinicians rarely have applied computer-aided design and computer-aided manufacturing (CAD/CAM) techniques in the rebuilding of the contour of the marginal gingiva in the esthetic zone. CASE DESCRIPTION: In this case report, the authors describe a female patient who had gingival inflammation and an asymmetrical contour of the marginal gingiva of the anterior maxillary teeth because previously placed ceramic crowns violated the biological width...
April 20, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28431806/gender-specific-evaluation-of-variation-of-maxillary-exposure-when-smiling
#5
Niels Christian Pausch, Dimitrios Katsoulis
INTRODUCTION: Excessive exposure of maxillary teeth when smiling can have a negative effect on the aesthetics and attractiveness of the face. The presented study was aimed to evaluate the effect of different amounts of gingival exposure on the perception of such human characteristics and qualities as age, attractiveness, gender specificity, and felt sympathy in the context of the whole face. MATERIALS AND METHODS: Forty-two participants (21 female and 21 male students of Dental Medicine) were recruited as evaluators for the study...
March 27, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28383139/clinical-characteristics-of-abutment-teeth-with-gingival-discoloration
#6
Ljubisa Ristic, Dragana Dakovic, Srdjan Postic, Zoran Lazic, Miljana Bacevic, Dragana Vucevic
PURPOSE: The grey-bluish discoloration of gingiva (known as "amalgam tattoo") does not appear only in the presence of amalgam restorations. It may also be seen in cases of teeth restored with cast dowels and porcelain-fused-to-metal (PFM) restorations. The aim of this article was to determine the clinical characteristics of abutment teeth with gingival discoloration. MATERIALS AND METHODS: This research was conducted on 25 patients referred for cast dowel and PFM restorations...
April 6, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28382581/the-prominent-proteins-expressed-in-healthy-gingiva-a-pilot-exploratory-tissue-proteomics-study
#7
Emre Yaprak, Murat Kasap, Gürler Akpınar, Sibel Kayaaltı-Yüksek, Alper Sinanoğlu, Nil Guzel, Husniye Demirturk Kocasarac
Gingiva is a unique tissue which protects the underlying periodontal tissues from consistent mechanical and bacterial aggressions. Molecular analysis of gingiva is likely to improve our understanding of the underlying biological processes at work. The aim of this preliminary exploratory study is to analyze the proteomic profile of healthy gingiva and to detect prominently expressed proteins. Gingival tissue samples were obtained from periodontally healthy individuals who underwent surgical crown lengthening procedure...
April 5, 2017: Odontology
https://www.readbyqxmd.com/read/28275793/-periodontal-status-of-labially-inversely-impacted-maxillary-central-incisor-in-mixed-dentition-after-orthodontic-treatment
#8
Hui-Xi Jiang, Zhen-Sheng Cao, Hao Sun, Han Hu, Yu Fang, Rong-Dang Hu
PURPOSE: To study the periodontal status of labially inversely impacted maxillary central incisor in mixed dentition after orthodontic treatment. METHODS: Sixteen patients with labially inversely impacted maxillary central incisor in mixed dentition and treated by guided rod appliance and conventional fixed appliance were enrolled in this study. Periodontal examinations were performed and cone-beam CT (CBCT) was taken approximately 2 years post treatment. Central incisors were divided into impacted and contralateral incisor groups...
December 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28274044/increased-advanced-oxidation-protein-products-generation-by-cyclosporine-a-and-angiotensin-ii-in-human-gingival-fibroblasts-ex-vivo-study
#9
Suresh Ranga Rao, Rajasekaran Subbarayan, Supraja Ajitkumar, Dinesh Murugan Girija
INTRODUCTION: Cyclosporin-A (CsA), an immunosuppressant, induces renal fibrosis and Renin Angiotensin System (RAS) is known to play a major role. CsA has the potential to increase the oxidative stress; specifically through the Advanced Oxidation Protein Products (AOPP) which could possibly stimulate fibrosis. A similar type of pathology occurs even in the gingiva known as CsA Induced Gingival Overgrowth (CIGO). AIM: This study was undertaken to estimate the AOPP generation by Human Gingival Fibroblasts (HGF) under the influence of CsA and Angiotensin II (Ang II)...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28174363/subjective-differences-between-dentists-and-patients-about-relative-quality-of-metal-ceramic-restorations-placed-in-the-esthetic-zone
#10
Mohammed M Al Moaleem, Faisal M Alkhayrat, Hussam A Madkhali, Ibrahim H Geathy, Mohammed Aw Qahhar, Ahmed Yaqoub, Khurshid A Mattoo
INTRODUCTION: Esthetic perceptions could differ between the dentist and his patients among various regions and cultures. AIM: The aims of this study were to evaluate the subjective differences between the dentist and the patient in terms of esthetics of metal-ceramic crowns (MCcs). The study also aims to compare the mesiodistal (MD) and buccolingual (BL) dimensions of the cemented crown with its respective natural antimeric tooth. MATERIALS AND METHODS: A total of 85 patients seeking treatment for a single crown (MC) were treated by the undergraduate students under supervision of respective academic staff...
February 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28169254/influence-of-symmetric-and-asymmetric-alterations-of-maxillary-canine-gingival-margin-on-the-perception-of-smile-esthetics-among-orthodontists-dentists-and-laypersons
#11
Shashank Katiyar, Sumit Gandhi, Javed Sodawala, G Anita, Shaheen Hamdani, Suyog Jain
INTRODUCTION: Esthetics is one of the major concerns among people seeking orthodontic treatment, and its perception varies from person to person. Our objective was to determine the differences in the perception of smile esthetics among orthodontists, general dentists, and laypersons with respect to alteration in the maxillary canine gingival margin in close-up smile analyses. MATERIALS AND METHODS: Close-up photograph of an ideal Indian female smile was selected...
November 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/27861672/a-two-year-evaluation-of-a-sloped-marginal-contour-implant-system-placed-in-healed-sites
#12
Philip Km Lee, Adam Sc Siu
PURPOSE: The purpose of this clinical trial was to evaluate the survival rate, bone remodeling, and soft tissue health around sloped marginal contour implants when placed in healed sites posteriorly in the mouth. MATERIALS AND METHODS: Implants were placed in healed sites at premolar and molar regions. After a 3-month osseointegration period, definitive prostheses were connected. Clinical and radiographic examinations were performed at implant placement and then 1, 3, 6, 12, and 24 months after implant placement...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27796574/clinical-performance-of-screw-retained-and-cemented-implant-supported-zirconia-single-crowns-36-month-results
#13
Claudio Cacaci, Friederike Cantner, Thomas Mücke, Peter Randelzhofer, Jan Hajtó, Florian Beuer
OBJECTIVES: The objective of this clinical study was to evaluate the clinical performance of implant-supported zirconia crowns with a sintered veneering cap. Furthermore, the influence of the type of retention (screw-retained vs cemented single crowns) was analysed. MATERIALS AND METHODS: Fifty-eight patients were accommodated with 114 implants, inserted in the molar and premolar regions. Zirconia-based crowns with a sintered veneering cap were either screw-retained (n = 53) or cemented (n = 61) on the implant...
October 29, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27730219/soft-tissue-cone-beam-computed-%C3%A2-tomography-st-cbct-%C3%A2-for-the-planning-of-esthetic-crown-lengthening-procedures
#14
Luisa Schertel Cassiano, Mauricio Barriviera, Sandra Suzuki, Gustavo Giacomelli Nascimento, Alessandro Lourenço Januario, Leandro Augusto Hilgert, Wagner Rodrigues Duarte
OBJECTIVE: The aim of this study was to measure the clinical crown, anatomical crown, and amount of gingiva covering the enamel of anterior maxillary teeth with soft tissue cone beam computed tomography (ST-CBCT) and thus propose a protocol for the application of this noninvasive method for the planning of esthetic crown lengthening procedures to prevent undesired root exposure. MATERIALS AND METHODS: Ten young patients (mean age 22.8 years) requiring esthetic crown lengthening surgeries but not restorative procedures were included in this study...
2016: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/27609390/-medication-compliance-and-diet-compliance-in-309-oral-lichen-planus-patients
#15
Ji-Yan Huang, Han-Qin Li, Liang Chen, Hou-Ming Zhao, Ye Lin
PURPOSE: To evaluate the feasibility and clinical outcomes of an atraumatic extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth. METHODS: Twenty-five patients with single hopeless anterior maxillary teeth were enrolled in the study. The involved teeth were extracted using Benex Extraction System and implants were immediately placed in a flapless way. Healing abutments were connected immediately. After 4-6 months of healing, screw-retained implant temporary crowns were used to reshape the peri-implant gingiva...
June 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27609389/-a-minimally-invasive-extraction-technique-using-benex-extraction-system-in-flapless-immediate-implant-placement-in-anterior-teeth
#16
Shu-Xin Ren, Xiu-Lian Hu, Jian-Hui Li, Xi Jiang, Ye Lin
PURPOSE: To evaluate the feasibility and clinical outcomes of an atraumatic extraction technique using Benex Extraction System in flapless immediate implant placement in anterior teeth. METHODS: Twenty-five patients with single hopeless anterior maxillary teeth were enrolled in the study. The involved teeth were extracted using Benex Extraction System and implants were immediately placed in a flapless way. Healing abutments were connected immediately. After 4-6 months of healing, screw-retained implant temporary crowns were used to reshape the peri-implant gingiva...
June 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27609299/gingival-fibromatosis-with-significant-de-novo-formation-of-fibrotic-tissue-and-a-high-rate-of-recurrence
#17
Katarzyna Gawron, Katarzyna Łazarz-Bartyzel, Andrzej Fertala, Paweł Plakwicz, Jan Potempa, Maria Chomyszyn-Gajewska
BACKGROUND Hereditary gingival fibromatosis is characterized by slowly progressive enlargement of the gingiva that can present as an isolated condition or present as part of various syndromes. CASE REPORT An 11-year-old female reported with a gingival lesion that caused masticatory problems and poor oral hygiene. Periodontal examination revealed a dense tissue covering 30% of her teeth crowns within both jaws. Panoramic x-ray showed a normal bone height and teeth positioning. The patient did not use any medications, but a similar condition was also present in other family members...
September 9, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27476829/stock-versus-cad-cam-customized-zirconia-implant-abutments-clinical-and-patient-based-outcomes-in-a-randomized-controlled-clinical-trial
#18
Ulf Schepke, Henny J A Meijer, Wouter Kerdijk, Gerry M Raghoebar, Marco Cune
BACKGROUND: Single-tooth replacement often requires a prefabricated dental implant and a customized crown. The benefits of individualization of the abutment remain unclear. PURPOSE: This randomized controlled clinical trial aims to study potential benefits of individualization of zirconia implant abutments with respect to preservation of marginal bone level and several clinical and patient-based outcome measures. MATERIAL AND METHODS: Fifty participants with a missing premolar were included and randomly assigned to standard (ZirDesign, DentsplySirona Implants, Mölndal, Sweden) or computer aided design/computer aided manufacturing (CAD/CAM) customized (Atlantis, DentsplySirona Implants, Mölndal, Sweden) zirconia abutment therapy...
February 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/27423283/oral-hygiene-and-gingival-health-in-patients-with-fixed-prosthodontic-appliances-a-six-month-follow-up
#19
S Kc Basnyat, B Sapkota, S Shrestha
Background Gingival inflammation and periodontal disease are the common complications of fixed dental prosthesis. They can be overcome by good oral hygiene maintenance. Objective The objective of this study was to assess the oral hygiene and gingival condition in patients after placement of fixed dental prosthesis for a period of six months. It was also analyzed how factors like type of fixed dental prosthesis (Single crown, fixed partial denture) and material (Metal, Porcelain fused to metal) are statistically associated with oral hygiene and gingival health...
October 2015: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27403061/esthetic-impact-of-gingival-plastic-surgery-from-the-dentistry-students-perspective
#20
Erdem Ayyildiz, Enes Tan, Hakan Keklik, Zulfikar Demirtag, Ahmet Arif Celebi, Matheus Melo Pithon
OBJECTIVE: The aim of the this study was to evaluate the perception of smile esthetics and alterations in cases of gingival plastic surgery for correction of a gummy smile, by means of alterations in smile photograph among dentistry degree students. MATERIALS AND METHODS: A frontal smile photograph of a 40-year-old woman having normal occlusion was used with diverse compositions of gingival exposure level and crown length of maxillary teeth. The eight photographs were evaluated by 216 dentistry students in five class groups (1(st), 2(nd), 3(rd), 4(th) and 5(th) classes)...
July 2016: European Journal of Dentistry
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