The purpose of this study was to compare the microshear bond strength of a self-etching primer adhesive to dentin prepared with different diamond points, carbide burs and SiC papers, and also to determine which SiC paper yield similar strength to that of dentinal surface prepared with points or burs.

Fifty-six human molar were sectioned to expose the occlusal dentinal surfaces of crowns and slabs of 1.2 mm thick were made. Dentinal surfaces were removed with three diamond points, two carbide burs, and three SiC papers. They were divided into one of eight equal groups (n = 7); Group 1: standard diamond point(TF-12), Group 2: fine diamond point (TF-12F), Group 3: extrafine diamond point (TF-12EF), Group 4: plain-cut carbide bur (no. 245), Group 5: cross-cut carbide bur (no. 557), Group 6 : P 120-grade SiC paper, Group 7: P 220-grade SiC paper, Group 8: P 800-grade SiC paper.

Clearfil SE Bond was applied on dentinal surface and Clearfil AP-X was placed on dentinal surface using Tygon tubes. After the bonded specimens were subjected to uSBS testing, the mean uSBS (n = 20 for each group) was statistically compared using one-way ANOVA and Tukey HSD test.

In conclusion, the use of extrafine diamond point is recommended for improved bonding of Clearfil SE Bond to dentin. Also the use of P 220-grade SiC paper in vitro will be yield the results closer to dentinal surface prepared with fine diamond point or carbide burs in vivo.

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  Hyo-Min Ryu, Jin-Han Lee
  The Journal of Korean Academy of Prosthodontics.2023; 61(3): 189.     CrossRef
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  Sebahat FINDIK AYDINER, Nuran YANIKOĞLU, Zeynep YEŞİL DUYMUŞ
  Cumhuriyet Dental Journal.2023; 26(2): 144.     CrossRef
• Influence of surface treatments and repair materials on the shear bond strength of CAD/CAM provisional restorations
  Ki-Won Jeong, Sung-Hun Kim
  The Journal of Advanced Prosthodontics.2019; 11(2): 95.     CrossRef
• Shear bond strength of dental CAD-CAM hybrid restorative materials repaired with composite resin
  Yun-Hee Moon, Jonghyuk Lee, Myung-Gu Lee
  The Journal of Korean Academy of Prosthodontics.2016; 54(3): 193.     CrossRef
• Microshear bond strength of a self-etching primer adhesive to enamel according to the type of bur
  Jin-Ho Jeong, Young-Gon Cho, Myung-Seon Lee
  Journal of Korean Academy of Conservative Dentistry.2011; 36(6): 477.     CrossRef

The purpose of this study was to compare the tensile bond strength of several self-adhesive resin cements bonded to dentin surfaces with different wet conditions.

Three self-adhesive resin cements; Rely-X Unicem (3M ESPE, St. Paul, MN, USA), Embrace Wetbond (Pulpdent, Oakland, MA, USA), Maxcem (Kerr, Orange, CA, USA) were used. Extracted sixty human molars were used. Each self-adhesive resin cement was adhered to the dentin specimens (two rectangular sticks from each molar) in different wet conditions.

Tensile bond strength were measured using universal testing machine (EZ Test, Shimadzu corporation, Kyoto, Japan) at a crosshead speed of 1.0mm/min. After the testing, bonding failures of specimens were observed by Operative microscope (OPMI pro, Carl Zeiss, Oberkochen, Germany). T-test was used to evaluate the effect of dentin surface wetness. One-way ANOVA test was used to evaluate the tensile bond strength of self-adhesive resin cements in the same condition. Scheffe's test was used for statistical analyzing at the 95% level of confidence.

The result showed that wetness of dentin surface didn't affect tensile bond strength of self-adhesive resin cements and Maxcem showed the lowest tensile bond strength.

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• Impact of Overdried Preparation and Thermocycling on the Fracture of CAD–CAM Hybrid Ceramic Occlusal Veneer Restorations
  Daranee Tantbirojn, Antheunis Versluis, Paul D Edgerley, David R Cagna
  International Journal of Prosthodontics and Restorative Dentistry.2019; 9(2): 38.     CrossRef
• Effects of dentin moisture on the push-out bond strength of a fiber post luted with different self-adhesive resin cements
  Sevinç Aktemur Türker, Emel Uzunoğlu, Zeliha Yılmaz
  Restorative Dentistry & Endodontics.2013; 38(4): 234.     CrossRef
• 'Wet or Dry tooth surface?' - for self-adhesive resin cement
  Jeong-Won Park
  Restorative Dentistry & Endodontics.2012; 37(4): 249.     CrossRef

This study evaluated the influence of application time of self-etching primers on microtensile bond strength (μTBS) to dentin using three self-etching primer adhesive systems.

Dentin surfaces were exposed from forty-eight human molars. They were conditioned with three self-etching primers (Clearfil SE Bond [SE], Unifil Bond [UF], Tyrian SPE + One Step Plus [TY]) and different primining times (10s, 20s, 30s and 40s). Composite resins were bonded to dentin surfaces and specimens were made. μTBS was tested and statistically compared using by one-way ANOVA and Tukey’s Test.

The results of this study presented that priming time for 10s in SE and UF groups and for 30s and 40s in TY group was highly decreased μTBS to dentin.

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  Sun-Ho Lee, Heung-Soo Lee, Hyo-Won Oh, Hyun-Jeong Ju, So-Young Park
  Journal of Korean Academy of Oral Health.2015; 39(3): 174.     CrossRef
• Logistic regression analysis of factors affecting the survival of first molars in Korean adults
  Sung-Suk Chung, Jong-Bae Kim, Young-Sam Kim, Young-Ran Jung, Jin-Sil Hong, Ju-Yeon Kim, Kee-Wan Chang
  Journal of Korean Academy of Oral Health.2015; 39(2): 88.     CrossRef
• Dental health capacity of the first permanent molars among children and adolescents in Korea for the year 2010
  Sun-Ho Lee, Hyun-Jeong Ju, So-Young Park, Hyo-Won Oh, Heung-Soo Lee
  Journal of Korean Academy of Oral Health.2013; 37(2): 103.     CrossRef