Caries progression after haematopoietic stem cell transplantation and the role of hyposalivation

Abstract

Haematopoietic stem cell transplantation (HSCT) preceded by a conditioning regimen is an established treatment option for many haematological diseases. Decreased salivary flow rates after HSCT may increase caries risk. We aim to estimate the extent to which caries lesions develop or progress in adult HSCT recipients and assess its association with salivary flow rate. A multi-centre prospective observational study was conducted in which patients receiving HSCT were followed up for 18 months. We included 116 patients (median age 56 years, 43% female) from two medical centres in the Netherlands. Unstimulated (UWS) and stimulated (SWS) whole saliva was collected and full caries charts were made before HSCT and 3, 6, 12 and 18 months post-HSCT. Caries was scored according to the ICDAS criteria by trained dentist-examiners. New dentine lesions or lesion progression into dentine (ICDAS ≥4 or cavitated root lesions) occurred in 32% of patients over 18 months. The median number of affected surfaces was 2 (range: 1 – 12) per patient with caries progression. The influence of hyposalivation of unstimulated saliva (

The Author(s). Published by S. Karger AG, Basel

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