Influence of aging on periodontal regenerative therapy using enamel matrix derivative: A 3-year prospective cohort study

Risako Mikami, Koji Mizutani, Hidehiro Shioyama, Takanori Matsuura, Norio Aoyama, Tomonari Suda, Yukako Kusunoki, Kohei Takeda, Yuichi Izumi, Jun Aida, Akira Aoki, Takanori Iwata

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Aim: To investigate the influence of chronological aging on periodontal regenerative therapy (PRT) outcomes with enamel matrix derivative (EMD). Materials and Methods: In total, 253 intra-bony defects (151 patients) including 44 furcation involvement were prospectively investigated for 3 years after regenerative therapy with EMD by evaluating probing pocket depth (PPD), clinical attachment level (CAL), and radiographic bone defect depth (RBD). The influence of age on these outcomes was assessed using multilevel regression analyses adjusting for confounders. Results: Participants' mean age was 55.9 ± 12.3 years (range: 22–85). Baseline PPD, CAL, and RBD were 6.14 ± 1.82, 7.22 ± 2.14, and 5.08 ± 2.04 mm, respectively. Significant improvement was observed with PPD reductions of 2.84 ± 1.73 and 2.87 ± 1.87 mm, CAL gains of 2.40 ± 1.87 and 2.47 ± 1.89 mm, and RBD gains of 1.76 ± 1.98 and 2.39 ± 2.41 mm at 1- and 3-year examinations, respectively. At the 1-year examination, multivariate analysis revealed a significant negative association between age and improvement in PPD and CAL (coefficients: −0.13, −0.23 mm per 10 years). However, by the 3-year examination, no significant association was noted between age and improvement in PPD, CAL, or RBD. Conclusion: Although the statistical difference was detected with age at 1-year examination, PRT with EMD significantly improved clinical outcomes on long-term observation, irrespective of the patient's age. Clinical trial registration number: UMIN000039846.

Original languageEnglish
Pages (from-to)123-133
Number of pages11
JournalJournal of Clinical Periodontology
Issue number2
Publication statusPublished - 2022 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Periodontics


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