Abstract:
:SmartPrep is a rotating instrument for dentin caries excavation made from a special polymer. The manufacturer's product information stated that SmartPrep removes carious dentin selectively. This in vitro study compared the efficiency of SmartPrep with conventional tungsten carbide bud burs. Fifty extracted teeth were split in the center of a carious lesion. The 100 specimens were randomly divided into five groups. Five dentists were asked to excavate 10 teeth each: one half with SmartPrep and the corresponding half with conventional bud burs. The time needed for the caries excavation was measured. Subsequently, histological specimens were produced from all cavities and analyzed by light-microscope after Mallory-Azan-staining. The thickness of the remaining caries was measured (< 1 mm or > 1 mm). The time expended was analyzed using the paired t-test. The results were analyzed for the remaining caries and thickness of the carious layer for every tooth, using the non-parametric Wilcoxon test for combined random samples. A binary logistical regression was performed to determine the influence of the three variables (tooth, sections or bur) on the criteria "caries" or "carious layer thickness (> 1 mm)." The average time to excavate a cavity with SmartPrep was 208.1 seconds, and it was 228.32 seconds with conventional bud burs. The difference between the recorded times was not statistically significant (p > 0.05). In 37 of 50 teeth, the number of carious sections was higher in the SmartPrep group than in the bud bur group. In nine teeth, the quantity of carious sections was higher in the bud bur group than in the SmartPrep group. Four teeth showed no difference in the number of carious sections. The results were statistically significantly different (p < 0.001). In 30 teeth, the number of carious sections with a carious layer thicker than 1 mm was higher in the SmartPrep group compared with the bud bur group. In nine teeth, the number of carious sections was higher in the bud bur group than in the SmartPrep group. Eleven teeth showed no difference in thickness of the carious dentin layer. These results were statistically significantly different (p = 0.003). Binary logistical regression showed that only the variable "bur" (bud bur or SmartPrep) influenced the results concerning the criterion "caries" (p < 0.001).
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Dammaschke T,Rodenberg TN,Schäfer E,Ott KHdoi
10.2341/05-24subject
Has Abstractpub_date
2006-03-01 00:00:00pages
256-60issue
2eissn
0361-7734issn
1559-2863journal_volume
31pub_type
杂志文章,随机对照试验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 wer...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/12-335-C
更新日期:2013-09-01 00:00:00
abstract::To protect glass-ionomer cement from moisture contamination and dehydration during initial setting, immediate application of a surface coating agent is recommended. This study compared the effect of various surface coatings on F release from glass-ionomer cement. Twenty glass-ionomer cement (Ketac Fil Aplicap) disks (...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1994-09-01 00:00:00
abstract::This in vitro study investigated the effects of a thin layer of flowable composite or compomer on microleakage occurring in Class II packable and nanofilled composite restorations that extend apical to the cemento-enamel junction (CEJ). The current study also investigated any differences in microleakage that occur bet...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/08-91
更新日期:2009-05-01 00:00:00
abstract::The purpose of this study was to determine the relationship between the deterioration and the later failure of a very large number of amalgams and anterior resin composites examined over periods of up to 16 years. Assessments were made of the deterioration of various clinical factors or characteristics of the restorat...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1993-07-01 00:00:00
abstract::The development of adhesive agents for bonding composite to dentin has rapidly evolved in recent years. It is postulated that dentin bond strengths in the range of 17 MPa are sufficient to resist the polymerization shrinkage of composite resins. The purpose of this study was to evaluate the shear bond strengths of the...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1995-03-01 00:00:00
abstract::One hundred non-carious, non-undercut cervical lesions were restored with Silux Plus or Estio LC and bonded with Fuji Bond LC. The restorations were evaluated yearly for retention and marginal discoloration. After five years, the overall retention rate was 96%. Of the 41 restorations examined at five years, five had c...
journal_title:Operative dentistry
pub_type: 临床试验,杂志文章
doi:
更新日期:2002-09-01 00:00:00
abstract::Amalgapins are susceptible to early fracture during matrix removal and carving. The purpose of this study was to examine the early fracture resistance of amalgapin-retained restorations using a spherical amalgam alloy, an admixed amalgam alloy, a combination of admixed alloy over the spherical alloy, and a recently in...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1998-03-01 00:00:00
abstract::This study compares volumetric changes and rates of shrinkage during different stages of polymerization of dental resin composites and compomers exposed to the same total energy by using two different combinations of power density and exposure duration. A hybrid composite and its equivalent flowable and a compomer and...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-09-01 00:00:00
abstract::The stronger the ceramic material, the longer the restoration stays in the mouth. The current study evaluated the two-year clinical performance of a strong ceramic system, IPS Empress II, with increased strength on onlay/inlay restorations of molars. Teeth from 35 patients, including three premolars and 32 molars, wer...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/08-97
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVES:To evaluate the clinical behavior of one-piece complete-coverage crowns and fixed partial dentures (FPDs) on teeth with vertical preparation without finish line biologically oriented preparation technique (BOPT). METHODS AND MATERIALS:This prospective study included 52 patients requiring treatment with rest...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/17-124-C
更新日期:2018-09-01 00:00:00
abstract::Dentin bridging of 150 mechanically exposed monkey pulps to two adhesive resins [BondWell LC (BW); Clearfil Liner Bond II (LB)] and a calcium hydroxide cement [Dycal (DY)] were histopathologically evaluated at 3, 7, 14, 30, and 60 days after operation (n = 10). The dentin bridge structure was three-dimensionally recon...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2000-05-01 00:00:00
abstract::Excessive etching of the dentin may decrease bond strength because the adhesive may fail to completely infiltrate to the base of the over-etched demineralized collagen network. The purpose of the present study was to evaluate the influence of increasing etching times on the microtensile bond strength of Single Bond an...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1999-05-01 00:00:00
abstract:OBJECTIVE:This clinical study aimed to assess the efficacies of mineral trioxide aggregate (MTA) and calcium hydroxide [Ca(OH)2] in the treatment of deep carious lesions by the direct complete caries removal technique. METHODS AND MATERIALS:A total of 100 permanent molar/premolar teeth were capped with either Ca(OH)2 ...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/16-110-C
更新日期:2017-09-01 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::This study evaluated the shear-bond strength of 11 luting cements from different material classes to manufactured pre-treated zirconia ceramics (Lava: 97% ZrO2, stabilized with 3% Y2O3). In addition, the influence of the curing method on shear-bond strength was investigated. The cements examined were one zinc-phosphat...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
abstract:PURPOSE:This study evaluated the amount of residual yellow in cured resin composites when polymerizing with either a quartz-tungsten-halogen (QTH) or blue light-emitting diode (LED). MATERIAL AND METHODS:Twelve shades (bleaching to conventional shades) of microfill, hybrid and microhybrid resin composite specimens (n ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/06-129
更新日期:2007-09-01 00:00:00
abstract::This study determined the effect of bleaching agents on the fracture toughness of composite materials. Four nanofilled resin composites were evaluated: Filtek Supreme Plus, Tetric EvoCeram, Premise and Esthet-X. Four concentrations of bleaching agents were tested: Opalescence PF 10%, 20%, 35% and 45%. Fifty specimens ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/08-120-L
更新日期:2009-11-01 00:00:00
abstract::The purpose of this study was to compare the long-term survivals of two low-copper and three high-copper amalgam alloys, and to analyze four clinical factors for their possible effects on the restoration survivals. Some 1476 polished restorations were placed in hospital patients by a large number of operators and asse...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract:OBJECTIVES:This study investigated the influence of resin composite preheating temperature, light curing regimen (mode and duration) on post-gel shrinkage strain (PGSS) and degree of conversion (DC) of a restorative resin composite. METHODS:A hybrid resin composite preheated to three different temperatures (37 degrees...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/09-072-L
更新日期:2010-03-01 00:00:00
abstract::The purpose of this study was to determine if air thinning three dentin adhesives would affect bond strength to dentin. Ninety human molars were mounted in acrylic and the occlusal surfaces ground to expose a flat dentin surface. Thirty teeth were randomly assigned to one of the following dentin bonding agent/composit...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
abstract::The reasons for placement and replacement and the longevity of amalgam restorations were recorded by 62 Italian private practitioners. The survey compiled 1935 amalgam restorations inserted due to primary caries (59%) and failed restorations (41%). The clinical diagnosis of secondary caries constituted 59% of failures...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::The objective of this study was to evaluate the effect of surface sealants and polishing delay time on a nanohybrid resin composite roughness and microhardness. Eighty disc specimens were made with a nanohybrid resin (Esthet-X HD, Dentsply). The specimens were divided into two groups (n=40) according to polishing time...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/17-048-L
更新日期:2018-07-01 00:00:00
abstract::This study evaluated the cytotoxicity of four single component dentin bonding agents: Syntac Single Component, Prime & Bond 2.1, Single Bond and One Up Bond F. The test materials were applied on dentin discs of dentin barrier models in the same way as in the clinical procedures recommended by each manufacturer. Cell v...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-07-01 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:OBJECTIVE:This in vitro study evaluated the effect of polishing with different polishing systems on the surface roughness and gloss of commercial composites. METHODS:One hundred disk-shaped specimens (10 mm in diameter × 2 mm thick) were made with Filtek P-90, Filtek Z350 XT, Opallis, and Grandio. The specimens were m...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/14-014L
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:This study aimed to assess the retention of metal copings luted to uremic teeth with five different luting agents. METHODS:A total of 35 sound natural molars was collected from uremic patients and randomly assigned into five groups (n=7). The teeth were prepared for metal copings using diamond tips and wate...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/12-523-LR2
更新日期:2014-05-01 00:00:00
abstract::This study evaluated the effects of two in-office bleaching agents (Beyond and Opalescence Boost) with different pH on the structure and mechanical properties of human enamel in vitro and in situ. One hundred and eight enamel slabs were obtained from freshly extracted premolars. The specimens were randomly distributed...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/11-173-L
更新日期:2013-01-01 00:00:00
abstract::This case report illustrates how to restore severely compromised teeth with direct composite restorations. The size of the restorations presented is often considered by dentists as being a contraindication for direct composites. Hence, the technique is explained step by step, addressing the crucial points. ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/15-001-T
更新日期:2016-09-01 00:00:00
abstract::This investigation examined the susceptibility to staining and translucency changes of some new tooth-colored restorative materials after immersion in different beverages. The materials studied were 3M Filtek Z350XT (ZT), 3M Filtek 350XT Flowable Restorative (ZF), Shofu Beautifil Flow Plus (BF), Shofu Beautifil II (B2...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/149027-L
更新日期:2015-03-01 00:00:00
abstract::This investigation evaluated the stabilizing effect of glass fiber reinforced posts (FRP) luted with self-adhesive universal cement on the fracture resistance of excessively flared endodontically treated teeth (ETT). Values were compared to teeth with no ferrule, 2 mm ferrule and resin cement for luting with 2 mm ferr...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/05-142
更新日期:2006-11-01 00:00:00