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https://www.readbyqxmd.com/read/29160402/effect-of-a-bioactive-glass-ceramic-on-the-control-of-enamel-and-dentin-erosion-lesions
#1
Michelle Alexandra Chinelatti, Camila Tirapelli, Silmara Aparecida Milori Corona, Renato Goulart Jasinevicius, Oscar Peitl, Edgar Dutra Zanotto, Fernanda de Carvalho Panzeri Pires-de-Souza
This study evaluated the effect of a bioactive glass ceramic for the control of erosion and caries lesions. Fragments (n=10) of bovine enamel and root dentin received daily application of different treatments (Biosilicate; Acidulated Phosphate Fluoride- APF; Untreated - control) during the performance of erosive cycles. Surfaces were analyzed with 3D optical profilometry to quantify the superficial loss in four periods (1, 7, 14 and 21 days), as well as the lesion depth with confocal laser scanning microscopy...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29119417/effect-of-methylene-blue-mediated-antimicrobial-photodynamic-therapy-on-dentin-caries-microcosms
#2
Daniela Alejandra Cusicanqui Méndez, Eliezer Gutierrez, Evandro José Dionísio, Thaís Marchini Oliveira, Marília Afonso Rabelo Buzalaf, Daniela Rios, Maria Aparecida Andrade Moreira Machado, Thiago Cruvinel
Antimicrobial photodynamic therapy (aPDT) has been proposed as an adjuvant treatment of dental caries, although there are no well-defined protocols to its clinical application. This study aimed to evaluate the influence of aPDT on the viability of microorganisms, vitality of biofilms, and lactic acid production of dentin caries microcosms. Biofilms were grown on bovine dentin discs in anaerobic conditions at 37 °C for 5 days, inoculating infected carious dentin in modified McBain medium plus 1% sucrose. The biofilms were treated by the combination of deionized water or 100 mg L(-1) methylene blue (MB) with 0, 37...
November 8, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29116301/clinical-performance-of-fluorescence-based-methods-for-detection-of-occlusal-caries-lesions-in-primary-teeth
#3
Laura Regina Antunes Pontes, Tatiane Fernandes Novaes, Bruna Lorena Pereira Moro, Mariana Minatel Braga, Fausto Medeiros Mendes
We aimed to investigate the performance of fluorescence-based methods (FBMs), compared to visual inspection after histological validation, in detecting and assessing the activity status of occlusal carious lesions in primary teeth. One examiner evaluated 50 primary molars close to exfoliation in 24 children. Teeth were assessed using quantitative light-induced fluorescence (QLF) and pen-type laser fluorescence (LFpen). After exfoliation, histological validation was performed. Teeth were cut and sections were evaluated for lesion depth and activity status (after utilization of a pH indicator) under a stereomicroscope...
November 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29099682/er-cr-ysgg-laser-energy-delivery-pulse-and-power-effects-on-enamel-surface-and-erosive-resistance
#4
Renan Mota de Oliveira, Vinicius Matsuzaki de Souza, Camila Machado Esteves, Ynara Bosco de Oliveira Lima-Arsati, Alessandra Cassoni, José Augusto Rodrigues, Aldo Brugnera Junior
BACKGROUND: High power lasers have been suggested as a useful tool for dental caries and erosion prevention due to the increase of enamel acid resistance. OBJECTIVE: to evaluate the effect of Er,Cr:YSGG (erbium,chromium:yttrium, scandium, gallium, garnet) laser irradiation pulse frequency and power on enamel surface and acid erosion resistance. METHODS: By combining pulse frequency (5-75 Hz) and power settings (0.10-1.00 W), 20 irradiated groups and one nonirradiated control group were tested...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29071038/evaluation-of-the-effect-of-different-laser-activated-bleaching-methods-on-enamel-susceptibility-to-caries-an-in-vitro-mode
#5
Sajjad Ashnagar, Abbas Monzavi, Mehdi Abbasi, Mahdi Aghajani, Nasim Chiniforush
Introduction: Today, bleaching is a routine noninvasive alternative for treatment of discolored teeth. The aim of this study was to determine whether conventional or laser activated bleaching predispose teeth to develop caries or not. Methods: Sixty human molars were mounted on acrylic cylinders and their Knoop microhardness (KHN) as well as DIAGNOdent (DD) values were recorded. They were divided into 4 experimental groups; G1) conventional bleaching with 40% hydrogen peroxide gel, G2) Diode laser assisted bleaching with same gel, G3) Nd:YAG laser assisted bleaching with the same gel, G4) control group...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29071020/in-vitro-comparison-of-fluoride-gel-alone-and-in-combination-with-er-cr-ysgg-laser-on-reducing-white-spot-lesions-in-primary-teeth
#6
Fatemeh Molaasadollah, Mohammad Asnaashari, Fatemeh Mashhadi Abbas, Maral Jafary
Introduction: Laser therapy has been suggested as a method for caries-prevention, and ErCr:YSGG laser is increasingly used in dentistry. This study aimed to compare the efficacy of fluoride gel alone and in conjunction with Er,Cr:YSGG laser for remineralization of white spot lesions (WSLs) in primary teeth. Methods: This study was conducted on 20 primary teeth with WSLs extracted for orthodontic reasons. Three sections were made of each tooth at the site of WSLs. The surface area of WSLs was measured under a stereomicroscope at ×25 magnification...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29070150/use-of-vital-pulp-therapies-in-primary-teeth-with-deep-caries-lesions
#7
Vineet Dhar, Abdullah A Marghalani, Yasmi O Crystal, Ashok Kumar, Priyanshi Ritwik, Ozlem Tulunoglu, Laurel Graham
PURPOSE: This manuscript presents evidence-based guidance on the use of vital pulp therapies for treatment of deep caries lesions in children. A guideline panel convened by the American Academy of Pediatric Dentistry formulated evidence-based recommendations on three vital pulp therapies: indirect pulp treatment (IPT; also known as indirect pulp cap), direct pulp cap (DPC), and pulpotomy. METHODS: The basis of the guideline's recommendations was evidence from "Primary Tooth Vital Pulp Therapy: A Systematic Review and Meta-Analysis...
September 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/29050026/new-preventive-approaches-part-i-functional-peptides-and-other-therapies-to-prevent-tooth-demineralization
#8
Marília Afonso Rabelo Buzalaf, Juliano Pelim Pessan
The limited effect of fluoride on root caries has prompted the study of new preventive therapies, which involve recently developed functional peptides, lasers, phosphate-based technologies, among several other approaches. Most of the specific peptides currently investigated have been developed based on the available information related to the protective action of salivary proteins, including statherin-derived peptides. Other peptides include 8DSS, self-assembling peptide P11-4, antimicrobial peptides, and casein phosphopeptides combined with amorphous calcium phosphate...
2017: Monographs in Oral Science
https://www.readbyqxmd.com/read/29050023/monitoring-of-root-caries-lesions
#9
Iain A Pretty
The early detection of root caries is essential for the implementation of appropriate preventive therapeutic regimes. Subsequent monitoring of lesions is required to determine the outcomes of such therapies. While much research activity has been seen in the detection and monitoring of enamel caries, this has not been seen in root caries - despite the possibilities for shorter clinical trials due to the more rapid remineralization and arrest of such lesions. The main stay of both clinical practice and research has been the use of visual tactile criteria including, hardness, texture, the presence or absence of cavitation, and color...
2017: Monographs in Oral Science
https://www.readbyqxmd.com/read/29047979/theoretical-imaging-study-of-early-caries-by-a-laser-induced-rayleigh-wave
#10
Yuan Ling, Mei Song, Shen Zhonghua, Ni Xiaowu, Lu Jian
Vivo human teeth are scanned by computed tomography through three-dimensional (3D) reconstruction technology. Geometric models of teeth are built. Based on that, a physical model of the laser induced acoustic waves propagating in teeth is established, and the finite element method is used to solve this physical model. As the velocity of the Rayleigh wave is sensitive to the elastic modulus of the teeth, the parameters, such as the position, demineralization degree, depth, and morphology of the caries, can be evaluated by the velocity field of the Rayleigh wave, which propagate in teeth...
September 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29032514/surface-roughness-and-bacterial-adhesion-on-root-dentin-treated-with-diode-laser-and-conventional-desensitizing-agents
#11
Maiza S Cury, Camilla B Silva, Ruchele D Nogueira, Michelle G D Campos, Regina G Palma-Dibb, Vinicius R Geraldo-Martins
The treatments for dentin hypersensitivity (DH) may change the surface roughness of the root dentin, which can lead to biofilm accumulation, increasing the risk of root caries. The aim was to compare the surface roughness of root dentin after different treatments of DH and the biofilm formation on those surfaces. After initial surface roughness (Sa) assessment, 50 bovine root fragments received the following treatments (n = 10): G 1-no treatment; G2-5% sodium fluoride varnish; G3-professional application of a desensitizing dentifrice; G4-toothbrushing with a desensitizing dentifrice; and G5-diode laser application (908 nm; 1...
October 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29016236/effects-of-445-nm-diode-laser-assisted-debonding-of-self-ligating-ceramic-brackets-on-shear-bond-strength
#12
Steffen Stein, Andreas Hellak, Michael Schauseil, Heike Korbmacher-Steiner, Andreas Braun
OBJECTIVES: The aim of this study was to measure the effect of irradiation with a novel 445-nm diode laser on the shear bond strength (SBS) of ceramic brackets before debonding. MATERIALS AND METHODS: Thirty ceramic brackets (In-Ovation(®) C, GAC) were bonded in standard manner to the planed and polished buccal enamel surfaces of 30 caries-free human third molars. Each tooth was randomly allocated to the laser or control group, with 15 samples per group. The brackets in the laser group were irradiated with the diode laser (SIROLaser Blue(®); Sirona) on three sides of the bracket bases for 5 sec each (lateral-coronal-lateral, a total of 15 sec) immediately before debonding...
October 10, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28993243/diagnosis-and-staging-of-caries-using-spectral-factors-derived-from-the-blue-laser-induced-autofluorescence-spectrum
#13
Ching-Chang Ko, Dong-Ho Yi, Dong Joon Lee, Jane Kwon, Franklin Garcia-Godoy, Yong Hoon Kwon
OBJECTIVE: The aim of this study was to identify the factors derived from the 405nm laser-induced autofluorescence (AF) spectra that could be used to diagnose and stage caries. MATERIALS AND METHODS: Teeth (20 teeth per stage) were classified as sound, stage II, III, and IV based on a visual and tactile inspection. The specimens were re-examined and reclassified based on micro-CT analysis. From the teeth, the AF was obtained using a 405nm laser. Three spectral factors (spectral slope at 550-600nm, area under the curve at 500-590nm, and two-peak ratio between 625 and 667nm) were derived from the AF spectra...
October 6, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28976844/a-clinical-study-on-the-effect-of-injection-sites-on-efficacy-of-anesthesia-and-pulpal-blood-flow-in-carious-teeth
#14
Q H Zheng, Q C Hong, L Zhang, L Ye, D M Huang
This randomized clinical trial evaluated the efficiency of maxillary infiltration anesthesia in carious teeth at two different injection sites and their impact on the laser Doppler recordings of pulpal blood flow (PBF) during a caries excavation procedure. The null hypothesis tested was that there are no differences in the efficiency of anesthesia and PBF reduction between maxillary infiltrations at the two injection sites. One hundred twenty patients were divided into three groups according to the degree of carious lesion of their maxillary left central incisors (moderate caries, deep caries, or no caries)...
October 4, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28944375/influence-of-different-calcium-phosphates-on-an-experimental-adhesive-resin
#15
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
PURPOSE: To formulate adhesive resins with 2 wt% of hydroxyapatite (HAp), α-tricalcium phosphate (α-TCP), or octacalcium phosphate (OCP) and to compare these groups with an unfilled adhesive regarding the degree of conversion, polymerization rate, microshear bond strength and mineral deposition. MATERIALS AND METHODS: The experimental adhesive resin was formulated mixing 66.6 wt% bisphenol A glycol dimethacrylate (bis-GMA), 33.3 wt% 2-hydroxyethyl methacrylate (HEMA), and a photoinitiator system...
September 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28932154/malpositioned-canine-treatment-with-autotransplantation-and-laser
#16
Serap Keskin Tunc, Mehmet Savas Kayasan, Esma Ozeroglu, Cennet Neslihan Eroglu
Children and young adults often have tooth loss due to congenital tooth deficiency, trauma, or caries. Autotransplantation has many benefits. The transplanted tooth can be moved orthodontically, maintains alveolar bone growth potential during eruption, and functional periodontal ligament function also permits tooth eruption, allows the defected areas to be filled with the bones; gingival contour is much more successful than the one obtained with prosthesis. In this paper, treatment steps and follow-up results of autotransplantation case supported with biostimulation are mentioned...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28920187/sub-ablative-er-cr-ysgg-laser-irradiation-under-all-ceramic-restorations-effects-on-demineralization-and-shear-bond-strength
#17
Serdar Bağlar
This study evaluated the caries resistant effects of sub-ablative Er,Cr:YSGG laser irradiation alone and combined with fluoride in comparison with fluoride application alone on enamel prepared for veneer restorations. And also, evaluated these treatments' effects on the shear bond strength of all-ceramic veneer restorations. One hundred and thirty-five human maxillary central teeth were assigned to groups of 1a-control, 1b-laser treated, 1c-fluoride treated, 1d-laser + fluoride treated for shear bond testing and to groups of 2a-positive control(non-demineralised), 2b-laser treated, 2c-fluoride treated, 2d-laser + fluoride treated, 2e-negative control (demineralised) for microhardness testing (n = 15, N = 135)...
September 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28914241/validation-of-different-diagnostic-aids-in-detection-of-occlusal-caries-in-primary-molars-an-in-vitro-study
#18
G Shwetha, Prakash Chandra, Latha Anandakrishna, G Dhananjaya, Ashmitha K Shetty, Punitha S Kamath
AIM AND OBJECTIVE: To estimate the accuracy and assess the sensitivity and specificity of direct visual examination (DVE), computerized radiograph (VISTA SCAN mini), and DIAGNOdent (DD) for caries diagnosis in primary molars as compared to histological examination of the teeth. MATERIALS AND METHODS: An in vitro comparative study was carried out on 40 freshly extracted primary molars with questionable pit and fissures that yielded 89 examination sites. These samples were mounted on plaster and were subjected to examination methods for caries detection on the occlusal surface by two trained and calibrated examiners...
October 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28902250/effect-of-cpp-acp-paste-with-and-without-co2-laser-irradiation-on-demineralized-enamel-microhardness-and-bracket-shear-bond-strength
#19
Nasrin Farhadian, Loghman Rezaei-Soufi, Seyed Farzad Jamalian, Maryam Farhadian, Shahrzad Tamasoki, Milad Malekshoar, Bahareh Javanshir
Introduction: Many patients seeking orthodontic treatment already have incipient enamel lesions and should be placed under preventive treatments. The aim of this in vitro study was to evaluate the effect of CPP-ACP paste and CO2 laser irradiation on demineralized enamel microhardness and shear bond strength of orthodontic brackets. Methods: Eighty caries-free human premolars were subjected to a demineralization challenge using Streptococcus mutans. After demineralization, the samples were randomly divided into five equal experimental groups: Group 1 (control), the brackets were bonded without any surface treatment; Group 2, the enamel surfaces were treated with CPP-ACP paste for 4 minutes before bonding; Group 3, the teeth were irradiated with CO2 laser beams at a wavelength of 10...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28898513/characterisation-of-a-sucrose-independent-in-vitro-biofilm-model-of-supragingival-plaque
#20
Kota Tsutsumi, Masato Maruyama, Akira Uchiyama, Ken-Ichiro Shibasaki
OBJECTIVES: Sugar consumption has been decreasing in Japan, suggesting higher rates of sucrose-independent supragingival plaque formation. For developing an in vitro biofilm model of sucrose-independent supragingival plaque, this study aimed to investigate the compositions and functions on contributing to cariogenicity in comparison with sucrose-dependent biofilm. MATERIALS AND METHODS: An in vitro multispecies biofilm containing Actinomyces naeslundii, Streptococcus gordonii, S...
September 12, 2017: Oral Diseases
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