Abstract:
UNLABELLED:Examining three bleaching systems, this in vivo clinical trial evaluated the relationship among tooth sensitivity, light activation, and agent concentration, and it correlated dental sensitivity with tooth thickness. MATERIALS AND METHODS:Eighty-seven volunteer patients were included. Inclusion criteria were the presence of anterior teeth without restorations as well as the absence of a previous bleaching experience and absence of noncarious cervical lesions or dental pain. Exclusion criteria included pregnancy or breastfeeding, a maximum of TF3 hypoplasia, tetracycline-fluorosis stains, malpositioned teeth, orthodontic treatment, periodontal disease, and/or analgesic/anti-inflammatory intake. Patients were randomly assigned to three bleaching groups: Group A (n=25) was treated with 15% H2O2 and nitrogenous-titanium-dioxide and was light activated (Lase Peroxide Lite, DMC, SaoCarlos, Sao Paulo, Brazil); Group B (n=27) was treated with 35% H2O2 and was light activated (Lase Peroxide Sensy, DMC); and Group C (n=35) was treated with 35% H2O2 (White Gold Office, Dentsply, 38West Clark Ave., Milford, USA) without light activation. Tooth sensitivity (TS) was self-reported by the patients using the visual analog scale (VAS) at baseline (TS0), immediately after treatment (TSI), and at seven days after treatment (TS7). In 46 patients, tooth thickness was determined by computed tomography. TS0, TSI, and TS7 were compared between the A and B groups to determine the effect of concentration and between the B and C groups to determine the effect of light using analysis of covariance. The correlation between tooth thickness and TSI was determined by Spearman Rho test (SPSS 15). RESULTS:Eighty-seven patients were evaluated at baseline, and 61 were evaluated at seven days. Separated by groups, tooth sensitivity, expressed as VAS value at the time points TS0, TSI, and TS7, respectively, were as follows: Group A: 13.76 ± 13.53, 24.40 ± 25.24, and 5.94 ± 5.5; Group B: 15.07 ± 18.14, 42.4 ± 31.78, and 8.68 ± 17.99; and Group C: 10.80 ± 14.83, 31.51 ± 29.34, and 7.24 ± 9.2. Group A showed significantly lower tooth sensitivity than group B at TSI (p=0.032). No differences were observed in the tooth sensitivities between groups B and C. No correlation was encountered between tooth thickness and tooth sensitivity immediately after treatment (Rho=-0.088, p=0.563). The median tooth thickness was 2.78 ± 0.21 mm. CONCLUSIONS:Increases in the concentration of bleaching agents directly affect tooth sensitivity, and LED/laser activation and tooth thickness are not correlated with tooth sensitivity after dental bleaching.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Moncada G,Sepúlveda D,Elphick K,Contente M,Estay J,Bahamondes V,Fernandez E,Oliveira OB,Martin Jdoi
10.2341/12-335-Csubject
Has Abstractpub_date
2013-09-01 00:00:00pages
467-76issue
5eissn
0361-7734issn
1559-2863journal_volume
38pub_type
杂志文章,随机对照试验abstract::This in vitro study evaluated the interfacial integrity of Class II resin composite restorations. The influence of a flowable composite and additional enamel etching was also evaluated. Deep, saucer-shaped Class II cavities were prepared in the mesial and distal proximal surfaces of 25 extracted human molars and assig...
journal_title:Operative dentistry
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2001-01-01 00:00:00
abstract::The role of silanes in the bonding of resin luting agents to glass-fiber posts (GFPs) is a controversial topic, and the question still remains whether post silanization is able to improve the retention of GFPs luted into root canals. Thus, this study was designed to determine whether evidence exists to justify silaniz...
journal_title:Operative dentistry
pub_type: 杂志文章,meta分析
doi:10.2341/14-330-O
更新日期:2015-11-01 00:00:00
abstract:INTRODUCTION:Adding antibacterial agents to a dentin conditioner used for a glass ionomer cement (GIC) has been shown to be antibacterial; however, it is not known whether this antimicrobial conditioning agent affects the bond strength to dentin in situ. This study applied GIC to antibacterial conditioned dentin withou...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to compare in Class V composite restorations marginal leakage measurements obtained with microcomputed tomography (micro-CT) and scanning electron microscopy (SEM) observations. METHODS:Class V cavities were prepared on 10 human molars and restored using Optibond FL (Kerr, Orange, CA...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/14-022-L
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:This study was performed to 1) quantify dentists' treatment thresholds for occlusal primary caries; 2) determine if the patient's age affects dentists' decisions to surgically treat these carious lesions; and 3) test the hypothesis that patients', dentists', and practices' characteristics are significantly a...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/13-141-C
更新日期:2014-09-01 00:00:00
abstract::The DIAGNOdent, a device used in caries detection, uses a laser to excite fluorescence from pigments in carious tooth structure. In clinical use assessing occlusal surfaces, distance and tooth structure may separate the instrument's tip from the fluorescent source.The aim of this in vitro study was to examine the effe...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/10-179-L
更新日期:2012-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of minocycline and chlorhexidine pretreatment of acid-etched dentin on the longevity of resin-dentin bond strength (μTBS) and nanoleakage of two-step etch-and-rinse adhesives. METHODS:Before application of Prime & Bond NT and Adper Single Bond 2 in occlusal dentin, the dentin surfaces...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/15-023-L
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to quantify the internal void volume formation in commercially available, resin composites inserted using conventional or sonic insertion methods, and analyzed using three-dimensional (3D) micro-computed tomography (μCT). METHODS AND MATERIALS:Four resin composites were evaluated: ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/16-331-L
更新日期:2018-03-01 00:00:00
abstract::This study investigated the effectiveness of cure and post-gel shrinkage of three visible light-cured composite resins (In Ten-S [IT], Ivoclar Vivadent; Z100 [ZO], 3M-ESPE; Tetric Ceram [TC], Ivoclar Vivadent) when polymerized with a very high intensity (1296 +/- 2 mW/cm2) halogen light (Astralis 10, Ivoclar Vivadent)...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE::Computer aided design-computer aided machining (CAD-CAM) ceramic crowns are replacing ceramo-metal ones due to newly developed mechanical properties and esthetics. To obtain knowledge about their interactions due to polishing and occlusal contacts with the opposing dental enamel specimen, including surface r...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/17-153-L
更新日期:2019-01-01 00:00:00
abstract::The replacement of a restoration is one of the most common procedures in dentistry. However, the criteria for such intervention, excluding catastrophic failure and persistent discomfort and pain, continue to be the subject of considerable debate. The decision-making process remains subjective on the part of the treati...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/15-058-O
更新日期:2016-09-01 00:00:00
abstract::In the direct treatment of cervical lesions and to improve the impression-making procedure prior to fabricating indirect restorations, exposure of the gingival sulcus and control of hemorrhage or gingival fluid seepage are a prerequisite. For gingival displacement, cords impregnated with medicaments are widely used. I...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract:OBJECTIVES:To evaluate the beam profile and the spectral output of monowave and polywave light-emitting diodes (LEDs) and their influence on the degree of conversion (DC) of bulk fill composites. METHODS:A monowave LED (Smartlite Focus, Dentsply) and a polywave LED (Valo Cordless, Ultradent) were characterized using a...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/16-164-L
更新日期:2017-07-01 00:00:00
abstract::The purpose of this study was to evaluate the 1-year results of the dentin bond (DBS)/viscous resin liner combinations Amalgambond Plus, Tenure/Panavia, Syntac/Dual Cem, and All-Bond 2/Liner F in reducing microleakage in class 5 cavity preparations restored with an admixed or a spherical amalgam alloy and to compare t...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::This study evaluated in vitro the necessity of retention grooves in approximal boxes in class 2 preparations with faciolingually wide occlusal extensions (occlusal isthmus width 1.8 mm). Thirty-six class 2 mesio-occlusal cavities were prepared in sound human maxillary premolar teeth and divided into three groups of 12...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1993-03-01 00:00:00
abstract::Amalgam has been used in the restoration of structurally compromised posterior teeth for many years. When placing large amalgam restorations, replacement of weak cusps with restorative material is recommended to prevent tooth fracture. This recommendation can be modified with new guidelines using modern adhesive techn...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-082-T
更新日期:2012-07-01 00:00:00
abstract::On occasion we receive manuscripts that we would like to publish, but do not have the page room to include in the print journal. For the full article, please go to www.jopdentonline.org or enter the provided address into your address bar. ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/1559-2863-43.3.335
更新日期:2018-05-01 00:00:00
abstract::The purpose of this study was to determine if the actual concentration of bleaching agents available in four different countries were the same as the label indicated and within the recommendations of the International Standard on Tooth Whitening. The method recommended for assaying peroxide by the United States Pharma...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-367-L
更新日期:2013-05-01 00:00:00
abstract::No data are available on the direct acute vascular effect of dental bonding materials on the dental pulp. This study investigated the effects of the components of a composite resin-bonding system on pulpal vascular diameter. Three groups of 10 male Sprague-Dawley rats (weighing 330 +/- 51 g) were used for this investi...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::The clinical performance of light curing resin composites is greatly influenced by the quality of the light-curing unit (LCU). Halogen LCUs are commonly used for curing composite materials. However, they have some drawbacks. The development of new, blue, super bright light emitting diodes (LED LCU) of 470-nm wavelengt...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::This study compared the clinical performance of a polyacid-modified resin composite and a resin-modified glass-ionomer restorative material over two years. Thirty-four pairs of restorations of Compoglass and Fuji II LC were placed in caries-free cervical erosion/abfraction lesions without tooth preparation. Restoratio...
journal_title:Operative dentistry
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:2001-01-01 00:00:00
abstract:OBJECTIVES:This study investigated cuspal deformation in teeth restored with different types of adhesive materials with and without a base. METHODS:Mesio-occluso-distal slot cavities of moderately large dimension were prepared on extracted maxillary premolars (n=24). Teeth were assigned to one of four groups and resto...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/14-331-L
更新日期:2016-03-01 00:00:00
abstract::The present clinical case report describes the clinical steps of enamel microabrasion associated with dental bleaching to restore severely-pitted fluorosed teeth. The process of removing the fluorotic superficial stains started by using macroabrasion with a water-cooled fine tapered 3195 FF diamond bur. Rubber dam iso...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/18-116-T
更新日期:2019-11-01 00:00:00
abstract::A core foundation system is frequently used in endodontically treated teeth that suffer excessive loss of the coronal portion of their structure. The volumetric shrinkage of core foundation resins may create marginal gaps that influence the bonding ability and longevity of a restored tooth. Little is known about how a...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the influence of thermal cycling on the flexural properties and simulated wear of computer-aided design/computer-aided manufacturing (CAD/CAM) resin composites. METHODS:The six CAD/CAM resin composites used in this study were 1) Lava Ultimate CAD/CAM Restorative (LU)...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/16-046-L
更新日期:2017-01-01 00:00:00
abstract::This study investigated the influence of light energy density (intensity x time) on the effectiveness of composite cure in view of the curing profiles of new light-polymerization units. This investigation used a digital microhardness tester to evaluate the hardness of the top/bottom surfaces and hardness ratio of 2 mm...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract::This article reports the case of a patient with bilateral hypodontia of the maxillary lateral incisors who was dissatisfied with the outcome of initial orthodontic treatment, highlighting the importance of a multidisciplinary interaction among Restorative Dentistry, Orthodontics, and Implantology to achieve satisfacto...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-167-T
更新日期:2012-09-01 00:00:00
abstract:OBJECTIVES:It has been reported that bleaching generates an increase in the activity of osteoclasts in vitro. We quantified the RANK-L and IL-1β biomarkers in a double-blind, randomized clinical trial evaluating the in vivo effect of hydrogen peroxide (35%) and peroxide carbamide (37%) six months after whitening. METH...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/18-023-C
更新日期:2019-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the effects of different desensitizing agents on the prevention of root caries when applied to root surfaces. MATERIALS AND METHODS:Thirty human roots were sectioned into quarters with a 3 × 4 mm window. A desensitizer (VX, Clinpro™ XT Varnish; SP, Seal & Protect®; o...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-007-L
更新日期:2012-05-01 00:00:00
abstract::This study investigated the effect of three equivalent radiant exposure energy application sequences (EASs): high intensity power (HIP: 1,177 mW/cm2, 40 seconds), low intensity power (LOP: 573 mW/cm2, 71 seconds) and ramp (RMP: 650 mW/cm2, 5 seconds, then the irradiance increases to 1047 mW/cm2, 37 seconds) on the mic...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/06-30
更新日期:2007-03-01 00:00:00