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Indian J Dent Res. 2018 Nov-Dec;29(6):721-725. doi: 10.4103/ijdr.IJDR_298_15.

Identification of bone-specific alkaline phosphatase in saliva and its correlation with skeletal age.

Author information

1
Department of Orthodontics and Dentofacial Orthopedics, SDM College of Dental Sciences, Dharwad, Karnataka, India.

Abstract

Context:

Bone-specific alkaline phosphatase (B-ALP), a product of osteoblasts, is a bone formation marker whose serum levels fluctuate with puberty and adolescence.

Aims:

This study aims to assess B-ALP levels in saliva and correlate it with different skeletal maturity stages of hand-wrist radiographs using Hagg and Taranger method.

Settings and Design:

Observational study and cross-sectional design.

Subjects and Methods:

Total sample comprised of 90 individuals, right hand-wrist radiographs, and 2 ml unstimulated whole saliva samples taken from each patient on the same day. The hand-wrist radiographs were traced and staged into 5 subgroups (18 individuals each) according to Hagg and Taranger method.

Statistical Analysis Used:

One-way analysis of variance (ANOVA) and Tukey's multiple post hoc test.

Results:

The comparison of salivary B-ALP values between the different skeletal subgroups using one-way ANOVA depicted statistically significant results (P = 0.0003). Pairwise comparison using Tukey's multiple post hoc procedures showed that salivary B-ALP levels were comparatively higher in subgroup 3 and that the difference between subgroups 1 and 3 (P = 0.0109) and subgroups 3 and 5 (P = 0.0014) was statistically significant.

Conclusion:

B-ALP could be successfully identified and quantitatively estimated in saliva and showed significant correlation with different skeletal age subgroups as determined by Hagg and Taranger method.

KEYWORDS:

Bone-specific alkaline phosphatase; puberty; saliva; skeletal age; skeletal maturity

PMID:
30588998
DOI:
10.4103/ijdr.IJDR_298_15
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