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Home Suitability of polymers as screw post materials in primary teeth: an in...

Suitability of polymers as screw post materials in primary teeth: an in vitro study

Authors:

  • T. Mizutani
    Department of Pediatric Dentistry, Matsumoto Dental University, Nagano, Japan
  • A. Nakayama
    Department of Pediatric Dentistry, Matsumoto Dental University, Nagano, Japan
  • H. Iwasaki
    Department of Pediatric Dentistry and Department of Oral Health Promotion, Graduate School of Oral medicine, Matsumoto Dental University, Nagano, Japan
  • H. Miyazawa
    Department of Oral Health Promotion, Graduate School of Oral medicine, Matsumoto Dental University, Nagano, Japan

ABSTRACT


Aim

Primary teeth undergo physiological root resorption during the transition to permanent dentition. The aim of
this study was to assess the potential use of screw posts in core build-up for primary teeth while adequately retaining the
crown restoration and allowing smooth physiological root resorption.

Methods

To determine whether biodegradable
polymers such as polyglycolic acid (PGA) and poly-L-lactic acid (PLLA) were appropriate as post materials, bending
strength test and bending elastic modulus test were performed according to ISO standards. The prepared screw posts were
immersed in 0.01 mol/L phosphate-buffered saline at 37 degrees Celsius, and changes due to hydrolysis were observed.
Results In the bending strength test and bending elastic modulus test, PGA and PLLA showed similar values to composite
resins used for core build-up. Although both showed adequate hydrolysis, the hydrolysis rate of PGA was higher than that of
PLLA.

Conclusion

PGA and PLLA may be suitable as biodegradable screw posts for primary teeth because they have
appropriate strength and hydrolysis ability.

PLUMX METRICS

Publication date:

Mar /2012

Keywords:

biodegradable polymers, poly-l-lactic acid, polyglycolic acid, primary teeth, restorative materials

Issue:

Vol.13 – n.1/2012

Page:

19 – 24

Publisher:

Ariesdue

Cite:


Harvard: T. Mizutani, A. Nakayama, H. Iwasaki, H. Miyazawa (2012) "Suitability of polymers as screw post materials in primary teeth: an in vitro study", European Journal of Paediatric Dentistry, 13(1), pp19-24. doi:
Vancouver: T. Mizutani, A. Nakayama, H. Iwasaki, H. Miyazawa. Suitability of polymers as screw post materials in primary teeth: an in vitro study. European Journal of Paediatric Dentistry [Internet]. 2012Mar.1 [cited 2025May.13];13(1):19-24. Available from: https://www.ejpd.eu/abstract-pubmed/suitability-of-polymers-as-screw-post-materials-in-primary-teeth-an-in-vitro-study/
MLA: T. Mizutani, A. Nakayama, H. Iwasaki, H. Miyazawa Suitability of polymers as screw post materials in primary teeth: an in vitro study. European Journal of Paediatric Dentistry. 2012;13(1):19-24

Copyright (c) 2021 Ariesdue

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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    European Journal of Paediatric Dentistry © | ISSN (Online): 2035-648X
    Registrazione del Tribunale di Milano n. 285 del 14.04.1998 | ROC 1946 - 26.09.2001
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