Effect of Different Composite Restorations on the Cuspal Deflection of Premolars Restored with Different Insertion Techniques- An In vitro Study

Singhal, Sakshi

doi:10.7860/jcdr/2017/20159.10440

Cited by 15 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The cuspal deflection results from the interaction between polymerization shrinkage stress of composite and cavity wall compliance, and should be understood biomechanically. The biomechanical factors can be classified into three main categories 3,4) : (1) Material factor, which relates to the physical properties, such as polymerization shrinkage, flowability, viscosity, and elastic modulus of composites [5][6][7][8][9][10][11] ; (2) Geometric factor, such as the cavity shape and size and the compliance of cavity wall [2][3][4]12) ; (3) Clinical factor that is technically changeable in clinical situations, such as bulk or incremental filling 1,[13][14][15][16][17] , direct or indirect restoration 3,18) , and light-curing protocols [19][20][21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

“…However, these studies have some limitations. Differences in anatomical and histological structures of extracted human tooth specimens and the size and shape of prepared cavity can cause variations in the cuspal deflections 12,16,17) . In an effort to reduce these deviations, several studies using aluminum molds have been reported, however, the shape and size of aluminum molds are somewhat different from the human tooth cavity 1,2,10,14) .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of cuspal compliance and radiant emittance of LED light on the cuspal deflection of replicated tooth cavity

Lee

2021

Dent. Mater. J.

View full text Add to dashboard Cite

The aim was to investigate effects of compliance and radiant emittance on cuspal deflection. A mesio-occluso-distal cavity was replicated using a flowable composite and steel rods with different diameters. To investigate the effect of cuspal compliance on deflection, the replicated tooth and extracted human tooth cavities were bulk-filled with a micro-hybrid composite. The replicated cavities with 2.0-mm-diameter steel rods were restored with bulk-filling of the micro-hybrid or a nano bulk-fill composite and photocured with four protocols. The cuspal deflection was the highest in the replicated tooth without steel rod, followed by with 1.0-, 1.5-, and 2.0-mm steel rods, and significantly lower in the human tooth. Cuspal deflections showed no significant differences among lightcuring protocols, and that in the micro-hybrid composite were higher than the nano bulk-fill composite. To reduce cuspal deflection of a high compliance cavity, selecting the proper composite based on physical properties is more important than light-curing protocol.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of cuspal compliance and radiant emittance of LED light on the cuspal deflection of replicated tooth cavity

Lee

2021

Dent. Mater. J.

View full text Add to dashboard Cite

show abstract

“…The cuspal deflection was estimated after 15 minutes of finishing restoration by measuring the distance between both reference points which was longer and slower than other composites in the polymerization shrinkage, through this time the largest degree of inward displacement was happened as reported by many previous studies (18)(19)(20) . This is due to the remaining free radicals.…”

Section: Discussionmentioning

confidence: 96%

Evaluation of Cusp Deflection in Teeth Restored with Various Manipulation Techniques and Types of Composite Restorations

2021

IJFMT

View full text Add to dashboard Cite

This study aim to evaluate and compare the deflection of premolar teeth cusps that filled incrementally with conventional composite (Universal Ceram X One Sphere TEC TM) and various types of bulk fill composite materials (Kerr SonicFill TM 3 , 3M Filtek TM Bulk Fill and Shofu Beautifil Bulk Fill). In this study 40 human, healthy maxillary first premolars were collected and large MOD cavity were prepared in them . According to restorative materials, the teeth were haphazardly categorized in 4 groups (n=10 per group). Group I : The teeth were filled with SonicFill™3 Kerr composite, Group II : The teeth were filled with Filtek Bulk Fill, Group III : The teeth filled with Shofu Beautifil Bulk Fill composite, and Group IV : The Teeth were filled with Dentsply Ceram X One Sphere TEC TM . By the aid of digital microscope intercuspal distance on the tips of the cusps between two index reference points was measured pre preparation of the cavity , post preparation, after 15 minutes of completion of fillings. The cuspal deflection was calculated by determination of the changes in measurements. Inward cuspal deflection was occurred in all teeth after filling , minimal cuspal deflection reported in all study groups that filled with bulk fill filling in comparison with group IV that filled in layering technique with conventional composite. Greater cuspal deflection produced by Beautifil Bulk Fill restorative in comparison with other groups. As a conclusion of this study that using of new bulk filling restorative materials could dramatically minimize cuspal deflection.

show abstract

“…However, differences in anatomical and histological structures among human teeth and the size and shape of prepared cavity can cause variations in measuring cuspal deflections. 12 , 13 , 14 Therefore, the use of standardized aluminum molds is recommended since their compliance can be easily altered by varying mold wall thickness and experimental errors can be reduced by using precisely milled cavities. In the present study, to control compliance quantitatively, aluminum blocks with different wall thicknesses simulating class II mesio-occluso-distal (MOD) cavities were used.…”

Section: Introductionmentioning

confidence: 99%

Effects of wall compliance and light-curing protocol on wall deflection of simulated cavities in bulk-fill composite restoration

Lee

2022

Journal of Dental Sciences

View full text Add to dashboard Cite

Background/purpose Cuspal deflections in composite restoration have been investigated with considering wall compliance of human tooth cavity and light-curing protocol. The purpose of this study was to investigate effects of mold wall compliance and radiant emittance of LED light on the wall deflection of simulated aluminum mold cavities restored with a bulk-fill composite. Materials and methods Sixty aluminum molds simulating a class II mesio-occluso-distal (MOD) cavity (6 W × 8 L × 4 D mm; W, width; L, length; D, Depth) were prepared and allocated to three groups with varying mold wall thicknesses of 1, 2, and 3 mm. The molds were bulk-filled with a bulk-fill composite and photo-cured. Four light-curing protocols were used: three duty ratios/exposure times: 100%/20 s, 50%/40 s, or an increasing mode (0 → 100%)/40 s with a pulse width modulated (PWM) LED curing light and one 20 s exposure time with a commercial LED light. Results Mean mold wall deflection at 2000 s decreased with increasing mold wall thickness (1, 2, and 3 mm) (p < 0.05). Wall deflections with 1- and 2-mm-thick molds exhibited no statistically significant differences among light-curing protocols (p > 0.05). However, in the 3-mm-thick mold, wall deflections with low radiant emittance were significantly lower than those with high radiant emittance (p < 0.05). Conclusion In composite restoration of class II MOD cavities, lowering the radiant emittance of LED light can reduce the mold wall deflection only in low compliance cavities.

show abstract

Effect of Different Composite Restorations on the Cuspal Deflection of Premolars Restored with Different Insertion Techniques- An In vitro Study

Cited by 15 publications

References 23 publications

Effects of cuspal compliance and radiant emittance of LED light on the cuspal deflection of replicated tooth cavity

Effects of cuspal compliance and radiant emittance of LED light on the cuspal deflection of replicated tooth cavity

Evaluation of Cusp Deflection in Teeth Restored with Various Manipulation Techniques and Types of Composite Restorations

Effects of wall compliance and light-curing protocol on wall deflection of simulated cavities in bulk-fill composite restoration

Contact Info

Product

Resources

About