Article Data

  • Views 863
  • Dowloads 275

Original Research

Open Access

Clinical evaluation of resorbable polylactic acid (PLA) intracanal posts for primary incisor restoration. Randomized controlled clinical trial

  • Hua Xu1
  • Xuefang Chen1
  • Junrong Wang2
  • Qian Zou1
  • Fengna Qi1
  • Xiaolan Ma1,*,

1Department of Oral Medicine, Hebei Eye Hospital, 054001 Xingtai, Hebei, China

2Department of Oral and Maxillofacial Surgery, Hebei Eye Hospital, 054001 Xingtai, Hebei, China

DOI: 10.22514/jocpd.2024.039 Vol.48,Issue 2,March 2024 pp.102-110

Submitted: 02 February 2023 Accepted: 16 August 2023

Published: 03 March 2024

*Corresponding Author(s): Xiaolan Ma E-mail:


This randomized, controlled clinical trial compares the clinical performance of glass-fibre and resorbable polylactic acid (PLA) intracanal posts used to restore carious primary incisors in young patients. The study sample includes 180 primary upper central incisors of 90 children aged 3 to 4 years. All patients were randomly divided into two equal groups of 45 children who received PLA and glass-fibre (GFP) intracanal posts. The clinical assessment of incisor restorations was carried out immediately upon completion and at months 3, 6 and 12 according to the following criteria: anatomical form, marginal adaptation, surface roughness, marginal pigmentation, colour match, secondary caries and contact point. The Gingival Index (GI), the Bleeding Index (Cowell modification; mBI), and bite force (BF) were measured. At the 3-month follow-up, the occlusal BF of patients who received PLA posts was higher than the baseline; the GI and mBI scores were lower, by contrast (p < 0.05). This tendency was even more pronounced 6 and 12 months after the restoration. The incidence of side effects or symptoms (apical inflammation, cervical fracture, loosening of the crown) after the PLA posts was significantly lower than after the GFP (p < 0.05). No statistically significant differences were present between the two groups with respect to colour matching, anatomical form, marginal adaptation, marginal pigmentation, surface roughness, occlusal contact and secondary caries. Based on the results, applying PLA intracanal posts and cyanoacrylate to residual anterior crowns in young children can improve their gingival health, reduce side effects, and increase the likelihood of successful restoration.


Pediatric dentistry; Caries; Coronal restoration; Glass-fibre post; Polylactic acid resorbable root post

Cite and Share

Hua Xu,Xuefang Chen,Junrong Wang,Qian Zou,Fengna Qi,Xiaolan Ma. Clinical evaluation of resorbable polylactic acid (PLA) intracanal posts for primary incisor restoration. Randomized controlled clinical trial. Journal of Clinical Pediatric Dentistry. 2024. 48(2);102-110.


[1] Santamaría R, Abudrya M, Gül G, Mourad M, Gomez G, Zandona AG. How to intervene in the caries process: dentin caries in primary teeth. Caries Research. 2020; 54: 306–323.

[2] Marshman Z, Kettle JE, Holmes RD, Cunningham KB, Freeman R, Gibson BJ, et al. Dental professionals’ experiences of managing children with carious lesions in their primary teeth—a qualitative study within the FiCTION randomised controlled trial. BMC Oral Health. 2020; 20: 64.

[3] BaniHani A, Santamaría RM, Hu S, Maden M, Albadri S. Minimal intervention dentistry for managing carious lesions into dentine in primary teeth: an umbrella review. European Archives of Paediatric Dentistry. 2022; 23: 667–693.

[4] Kazeminia M, Abdi A, Shohaimi S, Jalali R, Vaisi-Raygani A, Salari N, et al. Dental caries in primary and permanent teeth in children’s worldwide, 1995 to 2019: a systematic review and meta-analysis. Head & Face Medicine. 2020; 16: 22.

[5] Gizani S, Seremidi K, Stratigaki E, Tong HJ, Duggal M, Kloukos D. Vital pulp therapy in primary teeth with deep caries: an umbrella review. Pediatric Dentistry. 2021; 43: 426–437.

[6] Kotha SB, Binhuwaishel HA, Almuhaydib RN, Alzeghaibi LY, Alhajri MA. Clinical decision-making in managing deep carious lesions in primary teeth based on clinical experience among pediatric dentists—a cross-sectional study. Journal of Population Therapeutics and Clinical Pharmacology. 2022; 28: e17–e28.

[7] Amend S, Boutsiouki C, Bekes K, Kloukos D, Gizani S, Lygidakis NN, et al. Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated primary teeth: a systematic review. European Archives of Paediatric Dentistry. 2022; 23: 761–776.

[8] Ramamurthy P, Rath A, Sidhu P, Fernandes B, Nettem S, Fee PA, et al. Sealants for preventing dental caries in primary teeth. Cochrane Database of Systematic Reviews. 2022; 2: CD012981.

[9] Bordoni NE, Salgado PA, Squassi AF. Comparison between indexes for diagnosis and guidance for treatment of dental caries. Acta Odontológica Latinoamericana. 2021; 34: 289–297.

[10] Gab G, Rao BD, Panwar S, Narula H. Comparative evaluation of the compressive strength of two different post systems in primary anterior teeth restored with pediatric zirconia crowns. Journal of Indian Society of Pedodontics and Preventive Dentistry. 2020; 38: 253–258.

[11] Andrade SA. Cast metal posts versus glass fibre posts: which treatment of choice based on cost-minimisation analysis? Evidence-Based Dentistry. 2021; 22: 128–129.

[12] Martins MD, Junqueira RB, de Carvalho RF, Lacerda MFLS, Faé DS, Lemos CAA. Is a fiber post better than a metal post for the restoration of endodontically treated teeth? A systematic review and meta-analysis. Journal of Dentistry. 2021; 112: 103750.

[13] Gré C, Lise D, Ramos R, Van Meerbeck B, Vieira L, Lopes G. Better glass-fiber post preservation in teeth with ferrule when subjected to chewing. Operative Dentistry. 2021; 46: 419–427.

[14] Chirila M, Dimitriu B, Bartok RI, Amza O, Serban AM, Suciu I. Fracture resistance of endodontically treated teeth restored with resin post reinforced with glass fiber. Journal of Medicine and Life. 2021; 14: 81–85.

[15] Fouad H, Mourad AI, ALshammari BA, Hassan MK, Abdallah MY, Hashem M. Fracture toughness, vibration modal analysis and viscoelastic behavior of Kevlar, glass, and carbon fiber/epoxy composites for dental-post applications. Journal of the Mechanical Behavior of Biomedical Materials. 2020; 101: 103456.

[16] Pan H, Cheng C, Hu J, Liu H, Sun ZH. Bond strengths of absorbable polylactic acid root canal post with three different adhesives. Beijing Da Xue Xue Bao Yi Xue Ban. 2015; 47: 990–993. (In Chinese)

[17] Wang C, Zhang K, Jiang S. Research progress on polylactic acid post for the repairment of residual crown and root in deciduous teeth. International Journal of Stomatology. 2018; 45: 74–77.

[18] Hou Y, Huang H, Zhou Y. Polylactic acid absorbable film for absorbable thread pile seal study on microleakage of occlusion properties. Chinese Journal of Conservative Dentistry. 2015; 25: 610–614. (In Chinese)

[19] Ji K, Wang X, Zou YP, Xuan K, Yang FS. Effects of PLA post extract liguld on biological characteristics of deciduous teeth periodon al ligament flbroblasts. Journal of Clinical Stomatology. 2009; 25: 515–518. (In Chinese)

[20] Zou YP, Li SB, Ji K, Wang X, Yang FS, Xuan K. Effects of PLA post leaching liquor on biological characteristics of human dental follicle cells. Chinese Journal of Conservative Dentistry. 2009; 19: 567–570. (In Chinese)

[21] Gurbuz T, Sengul F, Altun C. Finite element stress analysis of short-post core and over restorations prepared with different restorative materials. Dental Materials Journal. 2008; 27: 499–507.

[22] Mizutani T, Nakayama A, Iwasaki H, Miyazawa H. Suitability of polymers as screw post materials in primary teeth: an in vitro study. European Journal of Paediatric Dentistry. 2012; 13: 19–24.

[23] AlJasser RN, AlSarhan MA, AlOtaibi DH, AlOraini S, AlNuwaiser R, AlOtaibi A, et al. Comparison of polymeric cyanoacrylate adhesives with suturing in free gingival graft stability: a split mouth trial. Polymers. 2021; 13: 3575.

[24] Shin DY, Kang M, Kang I, Kim H, Jeong S. In vitro and in vivo evaluation of polylactic acid-based composite with tricalcium phosphate microsphere for enhanced biodegradability and osseointegration. Journal of Biomaterials Applications. 2018; 32: 1360–1370.

[25] Singhvi MS, Zinjarde SS, Gokhale DV. Polylactic acid: synthesis and biomedical applications. Journal of Applied Microbiology. 2019; 127: 1612–1626.

[26] Schulz KF, Altman DG, Moher D. CONSORT 2010 statement: updated guidelines for reporting parallel group randomised trials. BMC Medicine. 2010; 8: 18.

[27] Jayaraman J, Dhar V, Donly KJ, Priya E, Raggio DP, Childers NK, et al. Reporting stAndards for research in pediatric dentistry (RAPID): an expert consensus-based statement. BMC Oral Health. 2021; 21: 369.

[28] Pereira R, Lins R, Rodrigues V, Lima D, Martins R, Aguiar F. Glass-fiber posts. Brazilian Journal of Oral Sciences. 2020; 19: e207508.

[29] Fleisher G. Index assessment of restored teeth and restorations. Guide for Doctors. 1st edn. Ekaterinburg: Ridero. 2019.

[30] Sarkis-Onofre R, Amaral Pinheiro H, Poletto-Neto V, Bergoli CD, Cenci MS, Pereira-Cenci T. Randomized controlled trial comparing glass fiber posts and cast metal posts. Journal of Dentistry. 2020; 96: 103334.

[31] Li G, Zhao M, Xu F, Yang B, Li X, Meng X, et al. Synthesis and biological application of polylactic acid. Molecules. 2020; 25: 5023.

[32] Xin Q, Sun T, Lu M, Wang Z, Song K, Hu D, et al. Poly[2-(methacryloyloxy)ethyl choline phosphate] functionalized polylactic acid film with improved degradation resistance both in vitro and in vivo. Colloids and Surfaces B: Biointerfaces. 2020; 185: 110630.

Abstracted / indexed in

Science Citation Index Expanded (SciSearch) Created as SCI in 1964, Science Citation Index Expanded now indexes over 9,500 of the world’s most impactful journals across 178 scientific disciplines. More than 53 million records and 1.18 billion cited references date back from 1900 to present.

Biological Abstracts Easily discover critical journal coverage of the life sciences with Biological Abstracts, produced by the Web of Science Group, with topics ranging from botany to microbiology to pharmacology. Including BIOSIS indexing and MeSH terms, specialized indexing in Biological Abstracts helps you to discover more accurate, context-sensitive results.

Google Scholar Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines.

JournalSeek Genamics JournalSeek is the largest completely categorized database of freely available journal information available on the internet. The database presently contains 39226 titles. Journal information includes the description (aims and scope), journal abbreviation, journal homepage link, subject category and ISSN.

Current Contents - Clinical Medicine Current Contents - Clinical Medicine provides easy access to complete tables of contents, abstracts, bibliographic information and all other significant items in recently published issues from over 1,000 leading journals in clinical medicine.

BIOSIS Previews BIOSIS Previews is an English-language, bibliographic database service, with abstracts and citation indexing. It is part of Clarivate Analytics Web of Science suite. BIOSIS Previews indexes data from 1926 to the present.

Journal Citation Reports/Science Edition Journal Citation Reports/Science Edition aims to evaluate a journal’s value from multiple perspectives including the journal impact factor, descriptive data about a journal’s open access content as well as contributing authors, and provide readers a transparent and publisher-neutral data & statistics information about the journal.

Scopus: CiteScore 2.0 (2022) Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles and 13,583 Inactive titles) from approximately 11,678 publishers, of which 34,346 are peer-reviewed journals in top-level subject fields: life sciences, social sciences, physical sciences and health sciences.

Submission Turnaround Time