Understanding the Association between Sublingual Buprenorphine and Oral Health Outcomes - ABSTRACT
The standard treatment for opioid use disorder (OUD) involves the use of medications (MOUD), primarily
sublingual (SL) buprenorphine due to its accessibility, efficacy, and tolerability. However, recently the Food and
Drug Administration (FDA) published an advisory suggesting SL buprenorphine use is linked to oral disease.
While compelling, this advisory is based on adverse event reports and case reports that did control for important
confounders such as behavioral and lifestyle factors that may increase the risk in individuals with OUD. More so,
these reports were cross-sectional providing limited evidence of rate of progression and incidence of new
disease. Additionally, the mechanism by which SL buprenorphine may adversely impact oral health remains
unclear. The long-term goal of this project is to quantify adverse oral events associated with SL buprenorphine,
facilitating implementation of interventions and practice recommendations to mitigate the burden of oral
complications in adults taking SL buprenorphine. The objective of this proposal is to understand if and how
SL buprenorphine increases the extent, onset, and progression of oral disease in adults with OUD. Our central
hypothesis is that SL buprenorphine causes alterations in the oral environment (e.g., reduction in salivary
flow/pH/buffer capacity and microbiome and inflammatory host response changes) that facilitate the incidence
and progression of oral disease. We will test this hypothesis with three aims: 1) characterize baseline extent of
oral complication and identify risk factors in adults receiving MOUD, 2) test whether SL buprenorphine is a risk
factor for oral disease onset and progression in adults taking MOUD, and 3) assess whether SL buprenorphine
changes saliva quantity, composition, microbial profile, or inflammatory host response in adults taking MOUD.
To accomplish these aims, we propose a prospective, multisite, cohort study across Kentucky and North
Carolina, leveraging a multidisciplinary team of researchers and clinicians to overcome the limitations identified
in the literature and expand our understanding of the link between SL buprenorphine and oral disease. We will
enroll 372 participants across two states that have been highly impacted by the opioid epidemic and evaluate
clinical, radiographic, physiologic, and behavioral information over an 8-month follow-up period. This study is
innovative as it is the first one to: conduct longitudinal follow-up, utilize a comparison MOUD group, and analyze
salivary characteristics to clarify the mechanisms of sublingual buprenorphine-induced disease and will quantify
the bacterial composition and inflammatory response and correlate to clinical findings. The proposed research
is significant because it will generate data-driven conclusions about the risks associated with oral disease
extent, onset, and progression in adults taking SL buprenorphine. These findings can be used to develop
preventive interventions to reduce the burden of oral disease and improve health in this population.