Abstract:
INTRODUCTION:Limited access to interdental spaces complicates removal of excess material when placing class II composite resin restorations. Evidence-based recommendations on interproximal finishing are rare. We present novel microscalpels for this indication. The aim of the study was to test their fracture strength and cutting ability and to compare microscalpels with the use of a scaler, oscillating devices (G5-ProShape, G5-Proxocare), finishing strips and scalpels of sizes 12, 15, and 21 in a standardized in vitro model. METHODS AND MATERIALS:Fracture strength (LOAD) and cutting forces (CUT) of microscalpels were evaluated at different angles (15, 30, 60, and 75 degrees; n=30 each) in a universal testing machine. Devices were compared in vitro using standardized composite overhangs. Marginal quality (QUAL; n=30) and quantity of excess/deficit (QUAN; n=30) were evaluated using scanning electron microscopy (SEM) for each device (explorative data analysis, Student t-test or analysis of variance; post hoc Scheffé). RESULTS:Microscalpels showed the highest LOAD (95.8 [5.0] N) (mean [standard deviation]) and easiest cutting (CUT) (7.6 [1.5]) at 15 degrees. At all angles, LOAD was significantly higher than CUT (p<0.001). Perfect margins were seen most often with scalpel size 12 (QUAL: 37% relative frequency), while most excess (73.4%) was observed with finishing strips. QUAN was lowest with microscalpels (19.3 [4.4] μm) and highest with finishing strips (116.0 [18.8]). Use of scalers led to fractures and crack formation. CONCLUSION:Microscalpels are able to cut composite at a lower force than necessary to fracture the blades at all angles. Small and/or curved scalpels yield the best-quality margins.
journal_name
Oper Dentjournal_title
Operative dentistryauthors
Wolff D,Schick S,Staehle HJ,Frese Cdoi
10.2341/16-012-Lsubject
Has Abstractpub_date
2017-05-01 00:00:00pages
297-307issue
3eissn
0361-7734issn
1559-2863journal_volume
42pub_type
杂志文章abstract::This study evaluated the shear bond strength of repairs made with a composite (Herculite/Kerr) when two different surface treatment methods and two new generation bond materials were used. The bonding surfaces were prepared by sanding with 500-grit aluminum oxide sandpaper or air abrading with 25-micron aluminum oxide...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-03-01 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:OBJECTIVE:The aim of this study was to compare the in vivo diagnostic ability of a laser fluorescence system (DIAGNOdent, KaVo, Biberac, Germany) with that of visual inspection in the early detection of occlusal caries in newly erupted noncavitated first permanent molars among caries-active children. MATERIALS AND MET...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/10-309-C
更新日期:2011-07-01 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::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::This in vitro study compared the marginal and internal adaptation of bulk-filled Class I and cuspal coverage direct resin composite restorations filled with different types of adhesive restorative systems and different thicknesses of bonding agent. Seventy-two intact, caries-free, freshly extracted human molars were r...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/06-157
更新日期:2007-09-01 00:00:00
abstract::Different approaches have been proposed to improve the adaptation of Class II restorations, including applying low-elasticity modulus base liners. This in vitro fatigue test (or study) evaluated the influence of the compomer base-lining configuration on restoration adaptation. Direct Class II MOD box-shaped composite ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2002-09-01 00:00:00
abstract::This study determined the degree of conversion of two LED (light-emitting diodes) (Elipar FreeLight [FL], 3M ESPE; GC e-Light [EL], GC), a high intensity (Elipar TriLight [TL], 3M ESPE) and a very high intensity (Astralis 10 [AS], Ivoclar Vivadent) halogen light. The degree of conversion of these lights was compared t...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
abstract::In vitro studies to assess bond strength between resins and ceramics have used surfaces that have been ground flat to ensure standardization; however, in patients, ceramic surfaces are irregular. The effect of a polished and unpolished ceramic on bond strength needs to be investigated. Sixty ceramic specimens (20×5×2 ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/11-009-L
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVES:To evaluate the effect of different surface treatments on the bond strength to a composite and a polymer-infiltrated ceramic CAD/CAM block after six-month artificial aging. METHODS AND MATERIALS:Two types of CAD/CAM blocks (Cerasmart, GC; Enamic, Vita Zahnfabrik) were cut in slabs of 4-mm thickness, divided...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/15-263-L
更新日期:2017-01-01 00:00:00
abstract:CLINICAL RELEVANCE:Using a material that optimizes marginal seal when using a margin elevation technique to manage deep class II cavities should enhance clinical outcomes. SUMMARY:Objectives: The purpose of this laboratory study was to perform a tridimensional interfacial gap evaluation of class II cavities with ename...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/19-161-L
更新日期:2020-09-01 00:00:00
abstract::The aim of this study was to compare five all-in-one bonding agents with respect to microleakage, microtensile bond strength (μTBS), degree of conversion (DC) and the impact of cavity configuration. The materials tested were Adper Easy Bond, Clearfil S3 Bond, iBond, Optibond All-in-One, Xeno IV, and Adper Single Bond ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/14-185-LR1
更新日期:2015-09-01 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
abstract::One hundred cervical caries-free, nonundercut lesions were restored in 13 patients of mean age 60.5 years, using Silux Plus or Estio LC resin composite bonded with Fuji Bond LC. Patients were recalled at 6 months and 1 year. A 1-year cumulative retention rate of 98% was recorded, while marginal staining was absent. ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1998-11-01 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:OBJECTIVES::The use of high-viscosity glass-ionomer cements (HVGICs) for atraumatic restorative treatment (ART) restorations is widely practiced with the advent of various HVGICs. However, the bonding of the latter to caries-affected dentin (CAD) should be validated, especially because it is the common substrate left a...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/17-154-L
更新日期:2018-11-01 00:00:00
abstract::The authors describe a minimally invasive procedure for occlusal rehabilitation in a young patient presenting with mild mandibular prognathism and loss of occlusal vertical dimension caused by dental erosion from chronic gastroesophageal reflux. ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/09-110T
更新日期:2010-01-01 00:00:00
abstract::Light Emitting Diode (LED) curing units are attractive to clinicians, because most are cordless and should create less heat within tooth structure. However, questions about polymerization efficacy have surrounded this technology. This research evaluated the adequacy of the depth of cure of pit & fissure sealants provi...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2005-11-01 00:00:00
abstract::This study evaluated the regional tensile bond strength of a dual-cure resin composite core material to root canal dentin using photo and dual-cure adhesives and different modes of polymerization. Nineteen extracted premolars were decoronated and their root canals prepared to a depth of 8 mm and a width of 1.4 mm usin...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVES:This randomized clinical trial tested the three-month desensitizing effect of two protocols using nano-hydroxyapatite formulations compared with Pro-Argin and fluoride varnish. METHODS:Twenty-eight subjects with 137 teeth presenting dentin exposure with a minimal hypersensitivity of four on the visual analo...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/15-145-C
更新日期:2016-07-01 00:00:00
abstract::This study investigated the reasons for placement and replacement of dental restorations in the United States Navy Dental Corps. The relationship between restoration longevity and the reasons for replacement of restorations was also studied. Data on newly placed dental restorations were collected from restorative dent...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00
abstract::A study was conducted to compare the shear bond strength of a glass-ionomer cement and glass-ionomer base to coronal and radicular dentin. Two different glass ionomers were bonded to paired coronal and radicular human dentin surfaces that had received no surface treatment or had been treated passively for 20 seconds w...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
abstract::The aim of this investigation was to verify the influence of 3 light curing units on the degree of conversion, using different irradiation conditions: 1) manufacturers' recommended times of photo-activation, 2) standardizing total energy density among the units and 3) standardizing energy density at the 450-490 nm wav...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/05-81
更新日期:2006-07-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the effect of phosphoric acid pre-etching times on shear bond strength (SBS) and surface free energy (SFE) with single-step self-etch adhesives. METHODS:The three single-step self-etch adhesives used were: 1) Scotchbond Universal Adhesive (3M ESPE), 2) Clearfil tri-S...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/15-221-L
更新日期:2016-07-01 00:00:00
abstract::This study evaluated the in vivo effects of bleaching agents containing 10% carbamide peroxide (Platinum/Colgate) or 7.5% hydrogen peroxide (Day White 2Z/Discus Dental) on mutans Streptococcus during dental bleaching. The products were applied on 30 volunteers who needed dental bleaching. In each volunteer, one of the...
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:2005-07-01 00:00:00
abstract::This study evaluated (1) the effect of known reductions in the output of curing lights on the depth of cure of various resins as determined by hardness measurements, and (2) the ability of the clinician to detect reduced light output by use of an explorer to compare the hardness of the top and bottom surfaces of resin...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:
更新日期:1994-03-01 00:00:00
abstract::This study investigated the effects of an at-home bleaching gel containing 15% carbamide peroxide on the susceptibility of tooth-colored restorative materials to different staining solutions. The tooth-colored restoratives used in this study were a nano resin composite (Filtek Z350), a packable resin composite (Filtek...
journal_title:Operative dentistry
pub_type: 杂志文章,随机对照试验
doi:10.2341/08-42
更新日期:2009-01-01 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::In some patients with labial white stains involving the enamel and dentin, bleaching associated with a restorative procedure using composites may be an appropriate treatment alternative. Although bleaching makes the teeth and the stain whiter, the staining is less evident and easier to restore. Restorative procedures ...
journal_title:Operative dentistry
pub_type: 杂志文章
doi:10.2341/12-284-T
更新日期:2013-07-01 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