Evaluation of salivary flow, pH and buffer capacity in the gestational and postpartum periods: a prospective case-control study
Abstract
Introduction:
There is divergence in the literature about salivary changes taking place during pregnancy. Objective: Evaluating salivary flow, pH and buffer capacity in women during gestational and postpartum periods, as well as comparing these parameters to those of non-pregnant women. Methods: Prospective case-control study conducted with convenience sample comprising pregnant (P) and non-pregnant (NP) women (1 case: 2 controls). Stimulated saliva samples were collected in the morning during pregnancy (20th, 30th and 38th gestational weeks) and after delivery. Data analysis was based on Shapiro-Wilk, Student’s t, Mann-Whitney and Friedman tests (p <0.05). Results: The study assessed 17 pregnant (mean age = 26.1±4.4 years) and 28 non-pregnant women (mean age = 24.4±4.4 years). There was difference in salivary flow (p=0.023) and buffer capacity (p=0.033) between P and NP during the postpartum period, as well as in salivary pH at the 20th (p=0.007) and 30th gestational weeks (p=0.010). Pregnant women did not show changes in salivary flow and pH during pregnancy and after delivery (p> 0.05). However, they recorded increased saliva buffer capacity in the postpartum period (p <0.001). Conclusion: Pregnant women presented lower salivary flow and buffer capacity in the postpartum period, as well as lower salivary pH during pregnancy (20th and 30th gestational weeks), than the group of non-pregnant women. There was no change in salivary flow and pH among pregnant women; however, they presented increased saliva buffer capacity at follow-up time.
Downloads
Downloads
Published
Issue
Section
License
The Revista Brasileira de Pesquisa em Saúde (RBPS) adopts the CC BY 4.0 license, which means that authors retain the copyright of the works they submit to the journal. Authors are responsible for declaring that their contribution is an original manuscript, that it has not been previously published, and that it is not under simultaneous review by another scientific journal. Upon submitting the manuscript, authors grant RBPS the exclusive right of first publication, subject to peer review.
Authors are permitted to enter into additional contracts for the non-exclusive distribution of the version published by RBPS (for example, in institutional repositories or as a book chapter), provided that due acknowledgment of authorship and of initial publication by RBPS is given. Authors are also encouraged to make their work available online (for example, in institutional repositories or on their personal pages) after its initial publication in the journal, with due acknowledgment of authorship and of the original publication by RBPS.
Accordingly, under the CC BY 4.0 license, readers have the right to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially;
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
