PMID- 29713431
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231112
IS  - 2005-7806 (Print)
IS  - 2005-7814 (Electronic)
IS  - 2005-7806 (Linking)
VI  - 10
IP  - 2
DP  - 2018 Apr
TI  - Effects of incorporation of 2.5 and 5 wt% TiO(2) nanotubes on fracture toughness, 
      flexural strength, and microhardness of denture base poly methyl methacrylate 
      (PMMA).
PG  - 113-121
LID - 10.4047/jap.2018.10.2.113 [doi]
AB  - PURPOSE: The aim of this preliminary study was to investigate, for the first 
      time, the effects of addition of titania nanotubes (n-TiO(2)) to poly methyl 
      methacrylate (PMMA) on mechanical properties of PMMA denture base. MATERIALS AND 
      METHODS: TiO(2) nanotubes were prepared using alkaline hydrothermal process. 
      Obtained nanotubes were assessed using FESEM-EDX, XRD, and FT-IR. For 3 
      experiments of this study (fracture toughness, three-point bending flexural 
      strength, and Vickers microhardness), 135 specimens were prepared according to 
      ISO 20795-1:2013 (n of each experiment=45). For each experiment, PMMA was mixed 
      with 0% (control), 2.5 wt%, and 5 wt% nanotubes. From each TiO(2):PMMA ratio, 15 
      specimens were fabricated for each experiment. Effects of n-TiO(2) addition on 3 
      mechanical properties were assessed using Pearson, ANOVA, and Tukey tests. 
      RESULTS: SEM images of n-TiO(2) exhibited the presence of elongated tubular 
      structures. The XRD pattern of synthesized n-TiO(2) represented the anatase 
      crystal phase of TiO(2). Moderate to very strong significant positive 
      correlations were observed between the concentration of n-TiO(2) and each of the 
      3 physicomechanical properties of PMMA (Pearson's P value </=.001, correlation 
      coefficient ranging between 0.5 and 0.9). Flexural strength and hardness values 
      of specimens modified with both 2.5 and 5 wt% n-TiO(2) were significantly higher 
      than those of control (P</=.001). Fracture toughness of samples reinforced with 5 
      wt% n-TiO(2) (but not those of 2.5% n-TiO(2)) was higher than control (P=.002). 
      CONCLUSION: Titania nanotubes were successfully introduced for the first time as 
      a means of enhancing the hardness, flexural strength, and fracture toughness of 
      denture base PMMA.
FAU - Abdulrazzaq Naji, Sahar
AU  - Abdulrazzaq Naji S
AD  - Foundation of Technical Education, College of Health & Medical Technology, 
      Baghdad, Iraq.
AD  - Department of Dental Biomaterials, School of Dentistry, International Campus, 
      Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran.
FAU - Behroozibakhsh, Marjan
AU  - Behroozibakhsh M
AD  - Department of Dental Biomaterials, School of Dentistry, Tehran University of 
      Medical Sciences, Tehran, Iran.
FAU - Jafarzadeh Kashi, Tahereh Sadat
AU  - Jafarzadeh Kashi TS
AUID- ORCID: 0000-0003-1233-6225
AD  - Department of Dental Biomaterials, School of Dentistry, International Campus, 
      Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran.
AD  - Department of Dental Biomaterials, School of Dentistry, Tehran University of 
      Medical Sciences, Tehran, Iran.
AD  - Dental Research Center, Dentistry Research Institute, Tehran University of 
      Medical Sciences, Tehran, Iran.
AD  - Iranian Tissue Bank and Research Center, Tehran University of Medical Sciences, 
      Tehran, Iran.
FAU - Eslami, Hossein
AU  - Eslami H
AD  - Department of Biomedical Engineering, Haeri University of Meybod, Yazd, Iran.
FAU - Masaeli, Reza
AU  - Masaeli R
AD  - Department of Dental Biomaterials, School of Dentistry, Tehran University of 
      Medical Sciences, Tehran, Iran.
FAU - Mahgoli, Hosseinali
AU  - Mahgoli H
AD  - Department of Prosthodontics, School of Dentistry, Tehran University of Medical 
      Sciences, Tehran, Iran.
FAU - Tahriri, Mohammadreza
AU  - Tahriri M
AD  - Department of Dental Biomaterials, School of Dentistry, Tehran University of 
      Medical Sciences, Tehran, Iran.
AD  - Marquette University School of Dentistry, Milwaukee, USA.
AD  - Biomaterials Group, Faculty of Biomedical Engineering, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Ghavvami Lahiji, Mehrsima
AU  - Ghavvami Lahiji M
AD  - Department of Dental Biomaterials, School of Dentistry, Tehran University of 
      Medical Sciences, Tehran, Iran.
FAU - Rakhshan, Vahid
AU  - Rakhshan V
AD  - Dentist In Private Practice, Tehran, Iran.
LA  - eng
PT  - Journal Article
DEP - 20180418
PL  - Korea (South)
TA  - J Adv Prosthodont
JT  - The journal of advanced prosthodontics
JID - 101521064
PMC - PMC5917102
OTO - NOTNLM
OT  - Denture base resin
OT  - Flexural strength
OT  - Fracture toughness
OT  - Poly methyl methacrylate (PMMA)
OT  - Titania nanotubes
OT  - Vickers microhardness
EDAT- 2018/05/02 06:00
MHDA- 2018/05/02 06:01
PMCR- 2018/04/01
CRDT- 2018/05/02 06:00
PHST- 2017/05/25 00:00 [received]
PHST- 2017/09/25 00:00 [revised]
PHST- 2017/12/05 00:00 [accepted]
PHST- 2018/05/02 06:00 [entrez]
PHST- 2018/05/02 06:00 [pubmed]
PHST- 2018/05/02 06:01 [medline]
PHST- 2018/04/01 00:00 [pmc-release]
AID - 10.4047/jap.2018.10.2.113 [doi]
PST - ppublish
SO  - J Adv Prosthodont. 2018 Apr;10(2):113-121. doi: 10.4047/jap.2018.10.2.113. Epub 
      2018 Apr 18.