PMID- 28482442
OWN - NLM
STAT- MEDLINE
DCOM- 20170830
LR  - 20181202
IS  - 1002-0098 (Print)
IS  - 1002-0098 (Linking)
VI  - 52
IP  - 5
DP  - 2017 May 9
TI  - [Effect of a nano hydroxyapatite desensitizing paste application on dentin bond 
      strength of three self-etch adhesive systems].
PG  - 278-282
LID - 10.3760/cma.j.issn.1002-0098.2017.05.004 [doi]
AB  - Objective: To evaluate a nano-hydroxyapatite (nano-HA) desensitizing paste 
      application on the bond strength of three self-etch adhesives. Methods: Three 
      dentin specimens of about 1 mm thick were cut from two teeth. Scanning electron 
      microscope (SEM) was used to evaluate the dentin surfaces without treatment, 
      after citric acid treatment and after nano-HA treatment. Thirty-six intact third 
      molars extracted for surgical reasons were cut to remove the occlusal enamel with 
      isomet, and then were etched with 1% citric acid for 20 s to simulate the 
      sensitive dentin and divided into two groups randomly using a table of random 
      numbers (n=18): the control group (no treatment) and the HA treated group (with 
      nano-HA paste treatment). Each group was divided into three subgroups randomly 
      using a table of random numbers (n=6). Subgroup A, B and C was bonded with 
      G-Bond, Clearfil S(3) Bond and FL-Bond Ⅱ according to the manufacture's 
      instruction separately. At 24 h after bonding procedure, and after water storage 
      for 6 months, microtensile bond strength of the specimens was tested and the 
      failure mode was analyzed. Results: SEM obeservation showed that citric acid 
      could open the dentin tubules to set up the sensitive dentin model, and the 
      nano-HA could occlude the dentin tubules effectively. For subgroup A, bonding 
      strength of specimens treated with nano-HA ([41.14+/-8.91] MPa) was significantly 
      high than that of the control group ([34.27+/-6.16] MPa) at 24 h after bonding 
      procedure (P<0.05). However, after 6 month water ageing, the bonding strength of 
      the control group and the HA treated group showed no significant difference 
      (P>0.05). For subgroup B, specimens with nano-HA application showed lower bonding 
      strength ([30.87+/-6.41] MPa) than that of the control group ([36.73+/-5.82] MPa) at 
      24 h after bonding procedure (P<0.05), and after 6 month water ageing, the bond 
      strength of nano-HA application ([25.73+/-6.99] MPa) was also lower than that of 
      the control group ([32.33+/-5.08] MPa) (P<0.05). For subgroup C, the bond strength 
      of the control group and the HA treated group have no significant difference 
      either before or after 6 month water ageing (P>0.05). Failure mode analysis 
      showed that more than half of the samples in all groups were adhesive failure. 
      Conclusions: Nano-HA treatment decreased the bond strength of subgroup B, while 
      had no adverse effect on subgroup A and subgroup C.
FAU - Pei, D D
AU  - Pei DD
AD  - Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, 
      College of Stomatology, Xi'an Jiaotong University, Xi'an 710004, China.
FAU - Liu, S Y
AU  - Liu SY
AD  - Department of Oral and Maxillofacial Surgery, School of Stomatology, Wuhan 
      University, Wuhan 430079, China.
FAU - Yang, H Y
AU  - Yang HY
AD  - Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 
      430079, China.
FAU - Gan, J
AU  - Gan J
AD  - Department of Prosthodontics, College of Stomatology, Xi'an Jiaotong University, 
      Xi'an 710004, China.
FAU - Huang, C
AU  - Huang C
AD  - Department of Prosthodontics, School of Stomatology, Wuhan University, Wuhan 
      430079, China.
LA  - chi
PT  - Journal Article
PL  - China
TA  - Zhonghua Kou Qiang Yi Xue Za Zhi
JT  - Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese 
      journal of stomatology
JID - 8711066
RN  - 0 (Adhesives)
RN  - 0 (Dentin-Bonding Agents)
RN  - 0 (G-Bond)
RN  - 0 (Methacrylates)
RN  - 0 (Ointments)
RN  - 91D9GV0Z28 (Durapatite)
SB  - IM
MH  - Adhesives
MH  - *Dental Bonding
MH  - Dental Enamel/drug effects
MH  - Dentin/*drug effects
MH  - Dentin-Bonding Agents
MH  - *Durapatite
MH  - Humans
MH  - Materials Testing
MH  - Methacrylates
MH  - Microscopy, Electron, Scanning
MH  - *Nanoparticles
MH  - Ointments
MH  - Random Allocation
MH  - Tensile Strength/drug effects
OTO - NOTNLM
OT  - Dentin sensitivity
OT  - Dentin-bonding agents
OT  - Hydroxyapatites
EDAT- 2017/05/10 06:00
MHDA- 2017/08/31 06:00
CRDT- 2017/05/09 06:00
PHST- 2017/05/09 06:00 [entrez]
PHST- 2017/05/10 06:00 [pubmed]
PHST- 2017/08/31 06:00 [medline]
AID - 10.3760/cma.j.issn.1002-0098.2017.05.004 [doi]
PST - ppublish
SO  - Zhonghua Kou Qiang Yi Xue Za Zhi. 2017 May 9;52(5):278-282. doi: 
      10.3760/cma.j.issn.1002-0098.2017.05.004.