Change of periodontal disease status during and after pregnancy

The association of reproductive health factors with periodontitis in 45-80 years old US women from NHANES 2009-2014

OBJECTIVES

We investigated the association of female reproductive factors with periodontitis.

MATERIALS AND METHODS

This cross-sectional study analyzed data from the US National Health and Nutrition Examination Survey 2009-2014 on 2321 women aged 45-80 years who had full-mouth periodontal examination and reproductive questionnaire. The 2018 World Workshop Classification of Periodontal and Peri-implant Diseases was used to classify periodontitis stages.

RESULTS

After adjustment, > 3 pregnancies or live births were associated with increased stage III/IV periodontitis but age at first birth (AFB) > 23 years and female hormone use were associated with decreased stage III/IV periodontitis, while there were no associations of oral contraceptive use or menopause status with stage III/IV periodontitis. Stage III/IV periodontitis was more common in women with > 3 pregnancies or live births and AFB ≤ 23 years or never using female hormones but less common in women with ≥ 3 pregnancies or > 3 live births and AFB > 23 years or using female hormones. >3 pregnancies or live births were related with increased stage III/IV periodontitis and increased AFB was related with lowered stage III/IV periodontitis in overweight and smoking subgroups but using female hormone was related with reduced stage III/IV periodontitis in nonsmoking, non-overweight and black subgroups.

CONCLUSIONS

>3 pregnancies/live births were related with severe periodontitis but AFB > 23 years and female hormone use were related with ameliorating periodontitis.

CLINICAL RELEVANCE

Women with > 3 pregnancies/live births should receive intensive periodontal interventions. Female hormone therapy or AFB > 23 years may be beneficial for periodontal health of > 3 pregnancies/live births women.

Maternal Salivary miR-423-5p Is Linked to Neonatal Outcomes and Periodontal Status in Cardiovascular-High-Risk Pregnancies

Periodontal disease (PD) during pregnancy may trigger systemic inflammation, increasing the risk of developing cardiometabolic disease (CMD). As a consequence, PD may result in the activation of cellular and molecular pathways, affecting the disease course and pregnancy outcome. Although microRNAs (miRNAs) are considered ideal biomarkers for many diseases, few studies have investigated salivary miRNAs and their role in pregnancy or neonatal outcomes. In this study, we sought to investigate the associations between salivary miRNAs of pregnant women with oral diseases and their effects on neonatal outcomes. Eleven (n = 11) salivary miRNAs from a cohort of pregnant women with oral diseases (n = 32; oral health, H; gingivitis, G; and periodontitis, P) were detected using a previous profiling analysis with an FDR < 0.20 and a fold change (FC) < 0.5 or FC > 2 for the most highly expressed miRNAs. Spearman correlations were performed for 11 salivary microRNAs associated with oral-derived inflammation, which could affect neonatal outcomes during pregnancies at risk for cardiometabolic disease (CMD), defined by the presence of a high pregestational BMI. In addition, ROC curves demonstrated the diagnostic accuracy of the markers used. Upregulation of miR-423-5p expression and a decrease in miR-27b-3p expression were detected in the P-group (p < 0.05), and ROC analysis revealed the diagnostic accuracy of miR-423-5p for discriminating oral diseases, such as gingivitis versus periodontitis (P vs. G, AUC = 0.78, p < 0.05), and for discriminating it from the healthy oral cavity (P vs. H, AUC = 0.9, p < 0.01). In addition, miR-27b-3p and miR-622 were also able to discriminate the healthy group from the P-group (AUC = 0.8, p < 0.05; AUC = 0.8, p < 0.05). miR-483-5p was able to discriminate between the G-group (AUC = 0.9, p < 0.01) and the P-group (AUC = 0.8, p < 0.05). These data support the role of salivary miRNAs as early biomarkers for neonatal outcomes in pregnant women with periodontal disease at high risk for CMD and suggest that there is cross-talk between salivary miRNAs and subclinical systemic inflammation.

Oral and general health conditions involved in periodontal status during pregnancy: a prospective cohort study

PURPOSE

Pregnancy is a period in a woman's life that has important consequences on oral health, particularly for gingival health. Present study aims to identify women at higher risk of developing periodontal disease (gingivitis and periodontitis) during late pregnancy and evaluate how this condition evolves during this period.

METHODS

Prospective cohort study was designed with pregnant women who were assessed during the first and third trimesters of gestation in a southern Spanish public hospital. Data regarding gingival and periodontal health, oral hygiene, and overall health status (obesity and diabetes mellitus) were collected. Reporting followed STROBE checklist.

RESULTS

Significantly higher number of women had the periodontal and gingival disease in the third trimester of gestation compared with in early pregnancy. In the third trimester of gestation, 42 (28.6%) and 63 (42.9%) of women presented symptoms of periodontal disease and gingival disease, respectively. Obesity (OR 2.834; 95%CI 0.919-8.741), worse oral hygiene during the first trimester of gestation (OR: 4.031; 95%CI 2.12-7.65), and periodontal disease during early pregnancy (OR: 15.104; 95%CI 3.60-63.36) most effectively predicted periodontal disease during late pregnancy.

CONCLUSIONS

Pregnancy is associated with exacerbated periodontal and gingival disease symptoms throughout the different trimesters of gestation. Obesity and oral hygiene during early pregnancy were the risk factors that most contributed to the aforementioned changes in periodontal disease.

Comparison of oxidative stress markers in the saliva, gingival crevicular fluid, and serum samples of pregnant women with gestational diabetes and healthy pregnant women

BACKGROUND AND OBJECTIVE

To compare oxidative stress (OS) markers in the saliva, gingival crevicular fluid (GCF), and serum samples of pregnant women with gestational diabetes (GDM) and healthy pregnant women and to investigate the association between periodontal health/diseases and OS and GDM.

METHOD

Eighty women with GDM and 80 healthy pregnant women were included in the study. Medical and clinical anamnesis was obtained from all the pregnant women included in the study, and their plaque index (PI), gingival index (GI), bleeding on probing (BoP), probing pocket depth (PPD), and clinical attachment level (CAL) measurements were performed. GCF, saliva, and serum samples were collected for the measurements of the local and systemic total antioxidant status (TAS) and total oxidant status (TOS).

RESULTS

Clinical periodontal parameters were found to be significantly higher in the GDM group compared to the control group. The serum and saliva TAS, TOS, and TAS/TOS values were significantly lower in the GDM group than in the control group. In the analysis of the GCF samples, the mean TAS and TAS/TOS values were significantly lower and the TOS value was significantly higher in the GDM group than in the control group. The multivariate reduced model indicated that gravidity, salivary TAS/TOS, and GCF TAS were significant independent variables in the development of GDM (p < .05).

CONCLUSION

Our results indicated that the OS of serum, saliva, and GCF samples increased in patients with GDM compared to healthy pregnant women. The role of local OS parameters in GDM may be associated with elevated clinical periodontal parameters.

Association between Maternal Periodontitis and Development of Systematic Diseases in Offspring

Periodontal disease (PD) is one of the most common oral conditions affecting both youths and adults. There are some research works suggesting a high incidence of PD in pregnant women. As an inflammatory disease of bacterial origin, PD may result in the activation of the pathways affecting the course and the pregnancy outcome. The authors, based on the literature review, try to answer the PICO question: Does maternal periodontitis (exposure) influence the incidence of complications rates in pregnancy and the development of systemic diseases in childhood and adult offspring (outcome) in the humans of any race (population) compared to the offspring of mothers with healthy periodontium (comparison)? The authors try to describe the molecular pathways and mechanisms of these interdependencies. There is some evidence that maternal periodontitis may affect the pregnancy course and outcome, resulting in preeclampsia, preterm delivery, vulvovaginitis and low birth weight. It can be suggested that maternal periodontitis may affect offspring epigenome and result in some health consequences in their adult life.

Development of gestational diabetes mellitus in women with periodontitis in early pregnancy: A population-based clinical study

AIM

This study aimed to determine whether periodontitis in early pregnancy and periodontal therapy during gestation affect the incidence of gestational diabetes mellitus (GDM) through a population-based clinical study.

MATERIALS AND METHODS

Subjects without periodontitis at 1-4 weeks of gestation who met our inclusion criteria were enrolled in the non-periodontitis group. Periodontitis patients who agreed or refused to receive periodontal therapy during pregnancy were separately enrolled in the periodontitis treated or untreated group. At 12-16 weeks of gestation, gingival crevicular fluid (GCF) and venous blood were collected for analyses of bacterial species and serum inflammatory mediators, respectively. At 24-28 weeks of gestation, GDM patients were identified by oral glucose tolerance tests. The association tests were performed using Chi-squared statistics and regression analyses.

RESULTS

The complete data of 3523 pregnant women were recorded during the study period. GDM incidence among the untreated periodontitis participants (84/749, 11.21%) was significantly higher than that among the non-periodontitis participants (108/2255, 4.79%) (p < .05), and periodontal treatment during gestation reduced the incidence from 11.21% (untreated group) to 7.32% (38/519, treated group) (p < .05). Based on multiple logistic regression analyses, it was found that periodontitis in early pregnancy was associated with GDM, and three-step regression analyses showed that Porphyromonas gingivalis (P. gingivalis) and the serum TNF-α and IL-8 levels played a role in the association between untreated periodontitis and GDM. Furthermore, Pearson's correlation test indicated that the existence of P. gingivalis in GCF was positively correlated with high serum levels of these two inflammatory mediators.

CONCLUSIONS

This study establishes a connection between periodontitis in early pregnancy and GDM and demonstrates that the presence of P. gingivalis is associated with high levels of inflammatory mediators in serum, and thereby may contribute to the development of GDM. In-depth mechanistic studies are needed to further support these findings.

A Successful Dental Care Referral Program for Low-Income Pregnant Women in New York

Despite evidence-based guidelines that advocate for dental care during pregnancy, dental utilization among pregnant women remains low, especially among low-income and racial-ethnic minority women. We investigated self-reported dental care referral and self-reported dental care attendance among a group of 298 low-income, largely racial-ethnic minority pregnant women attending two suburban prenatal care clinics that had integrated dental care referrals into their prenatal care according to these guidelines. We administered a questionnaire that asked women: (1) whether they had been referred for care by their prenatal care provider; (2) whether they had been seen by a dentist during pregnancy. Among those women who were eligible for a dental care referral (those who reported having dental symptoms, and those not having a recent dental visit), we found that 73.0% reported that they had indeed been referred for dental care by their prenatal provider, while the remaining women reported either no referral (23.5%, n = 67) or were not sure whether they had been referred (3.5%, n = 10). Among those who reported a dental care referral, 67.3% (n = 140) reported that they saw a dentist during their pregnancy, while of those who reported no dental care referral only 35.1% (n = 27) reported a dental visit (Chi-Sq. = 24.1, df = 1, p < 0.001). Having received a dental referral was a significant predictor of reporting a dental visit during pregnancy, with women who received a referral being 4.6 times more likely to report a dental visit during pregnancy compared to those women who did not report a referral. These results demonstrate that vulnerable pregnant women referred for dental care by their prenatal provider will indeed seek and utilize dental care when offered. This dental referral program may serve as a model for improving the utilization of dental care among this population.

Effectiveness of a family-centered behavioral and educational counselling approach to improve periodontal health of pregnant women: a randomized controlled trial

BACKGROUND

Poor oral hygiene and high hormone levels during pregnancy can lead to a deterioration in periodontal health. This study assessed the effectiveness of a family-centered behavioral and educational counselling program on improving the periodontal health of women during pregnancy and postpartum.

METHODS

A randomized controlled trial was conducted among pregnant women (10th-22nd gestational week) and their husbands. Participating families were randomized into test and control groups. Intervention in the test group included explanation of oral health education (OHE) pamphlets, oral hygiene instruction, individualized feedback, and proposed solutions to overcome barriers in self-care. Reinforcements were implemented in the 3rd trimester of pregnancy and six months postpartum. In the control group, only OHE pamphlets were distributed. The assessed outcomes were bleeding on probing (BOP), periodontal pocket (Poc), loss of clinical attachment (LoA), and Visible Plaque Index (VPI). The data collection was carried out at baseline (T₀), in the 32nd gestational week (T₁), and 12 months postpartum (T₂).

RESULTS

Altogether 589 pregnant women were recruited, and 369 attended all three visits (test:188; control:181). In the test group, the mean VPI score at T₀ was 0.19, which decreased to 0.14 at T₁ and 0.15 at T₂. In the control group, the mean VPI decreased from 0.19 at T₀ to 0.16 at T₁, but increased to 0.22 at T₂. A main effect of time and intervention and an interaction between time and intervention were detected (all p < 0.05), indicating that the intervention effect differed between T₁ and T₂. The test group showed a significantly greater decrease over time than the control group did. Similarly, the mean BOP% decreased more significantly over time in the test group (T₀:57%, T₁:46%, T₂:35%) than in the control group (T₀:58%, T₁:52%, T₂:46%). For Poc and LoA, there were improvements in both study groups at 12 months postpartum, compared with during pregnancy (p < 0.001).

CONCLUSIONS

Providing family-centered, behavioral, and educational counselling to pregnant women at an early stage of pregnancy and with reinforcements can improve their oral hygiene and reduce gingival inflammation. The effect can be sustained over an extended period and is greater than that of distributing oral health leaflets alone.

TRIAL REGISTRATION

Clinicaltrials.gov , #NCT02937194. Registered 18 October 2016. Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT02937194?cond=Family-centered+oral+health+promotion+for+new+parents+and+their+infants&draw=2&rank=1.

Pregnancy, parity and periodontal disease

Many women believe that their dental condition deteriorated during pregnancy or as a result of having children. Epidemiological studies have reported an association between higher parity and tooth loss, and higher parity and periodontal attachment loss. Several possible explanations for this association exist. First, hormonal changes during pregnancy affect the immune response to bacterial plaque and drive vascular and gingival changes that may contribute to heightened gingival inflammation. These changes are transient, without irreversible loss of periodontal attachment, and post-partum resolution can be expected for most women. For women with destructive periodontal disease, the effects of pregnancy and parity are unclear. Second, it is also plausible that parity and socioeconomic position (SEP) have shared risk factors, increasing the incidence of disease or influencing its management. Education, one aspect of SEP, is an important determining factor for women's fertility rate, with a gradient of fewer children with higher educational attainment. Higher levels of education are also favourably associated with behaviours conducive to oral health, and a lower incidence of damaging health behaviours. Thus, the potential for confounding is considerable. This review examines the literature on the association between pregnancy, parity and periodontal health, and explores sociobehavioural mechanisms for the observed association.

A Study of Oral Health Knowledge for Pregnant Women

PURPOSE

This paper examined the relationship between knowledge differences of maternal oral health and of relevant demographic variables.

METHODS

Participants included 239 pregnant women who were recruited from Women's Hospital located in B city who agreed to participate in this study. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation analysis using the SPSS 21.0 program.

RESULTS

Maternal knowledge of oral health was moderate level (10.22±2.36). Scores of maternal knowledge of oral health were different according to age, education, occupation, parity, and dental care experience in pregnancy. Level of oral healthcare knowledge was weakly related to age and education.

CONCLUSION

Consequently, it is necessary to encourage pregnant women to take part in oral health education program during antenatal care.

Prevalence and risk factors of periodontal disease among pre-conception Chinese women

BACKGROUND

Periodontal disease is one of the most common chronic infectious diseases. It has been reported that periodontal disease is associated with various adverse pregnancy outcomes including preterm birth, low birth weight, and gestational diabetes mellitus. Given the fact that the treatment for periodontal disease during pregnancy was ineffective in improving pregnancy outcomes by most of studies, the pre-conception period has been put forward as a more optimal time. However, very few studies have reported the prevalence of periodontal disease among pre-conception women. This study aimed to examine the prevalence and risk factors of periodontal disease among Chinese pre-conception women.

METHODS

A survey was conducted among pre-conception women at the Maternal and Child Health Hospital, Changzhou, China between January 2012 and December 2014. A total of 987 pre-conception women were recruited for a full-mouth dental examination after providing informed consent. A dental examination was carried out by probing six sites per tooth using a manual UNC-15 probe and a recording form.

RESULTS

The overall rate of periodontal disease among participants was 73.9% (729/987) (95% confidence interval (CI): 71.0-76.6%). Among women with periodontal disease, 48.0% of cases were mild, 50.9% were moderate and 1.1% were severe. Self-reported bleeding during tooth brushing was the only significant predictive factor for overall periodontal disease (adjusted odds ratio (aOR): 3.71, 95% CI: 2.24, 6.15, P < 0.001) and moderate/severe periodontal disease (aOR: 5.17, 95% CI: 3.05, 8.79, P < 0.001).

CONCLUSION

A high prevalence of periodontal disease was found in pre-conception Chinese women. Women who have bleeding during tooth brushing could be at increased risk of periodontal disease, and might require further oral health care.

Periodontal Disease and Adverse Pregnancy Outcomes: A Prospective Study in a Low-Risk Population

BACKGROUND

Periodontal disease has been associated with systemic inflammation and adverse pregnancy outcomes, including preeclampsia and preterm birth.

OBJECTIVE

To examine the relationship between periodontal disease in early pregnancy and the risk of amniotic inflammation, preterm birth, and preeclampsia.

METHODS

We performed a prospective cohort study of women undergoing amniocentesis for fetal karyotype between 15 and 24 weeks' gestation. Participants underwent periodontal examination by a certified dentist, and a sample of amniotic fluid was collected. Periodontal disease was defined as the presence of one or more sites with probing depths ≥ 4 mm and ≥ 10% bleeding on probing. Matrix metalloproteinase-8 and interleukin-6 concentrations in the amniotic fluid were measured. Medical charts were reviewed for perinatal outcomes. Univariate and multivariate logistic regression analyses were used to assess the association between periodontal disease and adverse pregnancy outcomes.

RESULTS

We recruited 273 women at a median gestational age of 16 weeks (range 15 to 24), and 258 (95%) agreed to undergo periodontal examination. Periodontal disease was observed in 117 of the participants (45%). We observed no significant association between periodontal disease and preterm birth (relative risk [RR] 2.27; 95% CI 0.74 to 6.96) or spontaneous preterm birth (RR 0.90; 95% CI 0.20 to 4.11). However, women with periodontal disease were more likely to develop preeclampsia, and this association remained significant after adjustment for potential confounders (adjusted RR 5.89; 95% CI 1.24 to 28.05). Periodontal disease was not associated with significant differences in the intra-amniotic concentration of matrix metalloproteinase-8 (13.0 ± 46.6 vs 5.7 ± 10.4 ng/mL, P = 0.098) or interleukin-6 (3.3 ± 20.3 vs 1.0 ± 1.6 ng/mL, P = 0.23), although a non-significant trend was observed.

CONCLUSION

Periodontal disease is associated with preeclampsia but not with spontaneous preterm birth. The current study cannot exclude an association between periodontal disease and intra-amniotic inflammation.

Periodontal Condition and Treatment Needs of Some Pregnant Women in Ibadan, Nigeria

Background:

Periodontal diseases had been reported to be worse in the presence of hormonal imbalance as seen during pregnancy, which if that is the case, should resolve following childbirth when the hormonal level of the women should have reverted to normal.

Subjects and methods

Periodontal health of 345 pregnant women was assessed once during pregnancy and at 14^th week following their childbirth. The clinical variant of community periodontal index of treatment needs probe was used in the assessment.

Results:

During pregnancy, 167/345 (48.4%) of the women had deep pockets, 178/345 (51.6%) had shallow pockets. After childbirth, 5/345 (1.5%) had healthy periodontium, 25/345 (7.2%) had calculus and 7/345 (2.0%) had deep pockets. All of the respondents required oral hygiene instructions (OHI) and prophylaxis and 167/345 (48.4%) required complex treatment during pregnancy. After childbirth, 340/345 (98.5%) of the women required OHI and prophylaxis. Despite the great need for dental treatment among the respondents, majority never sought any treatment as 308/345 (89.3%) of the respondents had never visited a dentist before the study.

Conclusion:

The fact that the deep pocket reduced drastically following childbirth shows that it was not a true pocket. The high unmet treatment needs among the respondents require a concerted effort from dentists and policy makers in order to enlighten the women, especially those of child bearing age concerning the need for preventive dental visitation.

Impact of periodontal conditions on the quality of life of pregnant women: a cross-sectional study

Background

Studies have been rarely conducted to provide a comprehensive perspective of pregnant women with the intention to investigate the relationships between periodontal conditions and oral health-related quality of life (OHRQoL). As such, this study aimed to describe the OHRQoL of pregnant women in Shanghai, China and to investigate the relationships between periodontal conditions and OHRQoL of pregnant women.

Methods

A cross-sectional study was conducted amongst pregnant women in all stages of pregnancy in Shanghai, China. Clinical examinations were performed to assess periodontal conditions, including tooth loss, visible plaque index, bleeding on probing, probing pocket depth and clinical attachment level. The OHRQoL of pregnant women was determined using the Oral Health Impact Profile (OHIP-14, Chinese version). Information regarding maternal characteristics, socio-demographic background and health-related behaviours was also obtained from the participants through the structured questionnaires.

Results

A total of 512 pregnant women (mean age = 27.3 ± 4.0 years)participated in the survey,giving a response rate of 91.4 %. The mean gestational age was 19 weeks (SD = 8.2). The mean and the median OHIP-14 scores were 7.92 (SD = 6.84) and 6, respectively. The mean number of negative impact items (extent) was 0.20 (SD = 0.82). Approximately 10 % of pregnant women reported at least one item with ‘fairly often’ or ‘very often’ (prevalence). Results of multivariable analyses showed that periodontal conditions was not significantly associated with three scoring formats of OHRQoL (severity, extent and prevalence of impact) after adjustment for pregnancy-related variables and possible confounders (all p > 0.05). However, frequency of nausea-vomiting was found to be significantly associated with severity of impacts (p = 0.012). Utilization of dental services, age and tooth loss were the significant variables to the extent of negative impacts (all p < 0.05). While no significant variable was related with prevalence of negative impacts (p > 0.05).

Conclusion

Pregnant women with different trimesters showed similar impact of oral disease on their OHRQoL in Shanghai, China. Periodontal health status have no impact on their OHRQoL in the fully adjusted models. Their OHRQoL was associated with early pregnancy reaction, utilisation of dental services, age and tooth loss.

Sociodemographic disparities and behavioral factors in clinical oral health status during pregnancy

OBJECTIVES

Although oral health (OH) problems are common during pregnancy, little is known about individual characteristics or behaviors relating to clinically assessed OH during pregnancy. This cross-sectional study describes the clinical OH status of a sample of pregnant women, examines relationships between sociodemographic factors and OH, behavioral factors and OH, and the influence of behavior on the relationships between sociodemographic clusters and OH. Baseline data were utilized from a pilot intervention study promoting OH during pregnancy.

METHODS

Participants (n = 99), recruited from CenteringPregnancy(®) prenatal care groups completed questionnaires addressing race/ethnicity, income, education, dental insurance, oral hygiene practices, and dental care utilization; and clinical examinations for periodontal probing depths (PD), bleeding on probing (BOP), plaque assessment, and visual detection of untreated decay. Chi-squares and one-way anovas with Tukey's studentized range test of planned comparisons were conducted to examine bivariable relationships between both sociodemographic and behavioral characteristics to OH status. Multivariable logistic regression analyses tested whether the effects of sociodemographic variables on OH status might be mediated by behaviors, including self-reported oral hygiene and recent dental visits.

RESULTS

Forty-five percent of the sample had untreated decay and the mean percentage of sites with BOP = 18%. Bivariable analyses of sociodemographic factors indicated that compared with Whites, Hispanic women had greater % of sites with: BOP, PD ≥5 mm plus BOP, and Plaque Index (PI) scores of ≥2, all P = 0.05; and greater untreated decay (Chi-square 13.3, P < 0.001). Lower income was related to greater untreated decay (Chi-square 7.6, P < 0.01). Compared with the highest education level, the lowest level group had higher % BOP, P < 0.05. Public dental insurance (versus private) was associated with greater % BOP, PD ≥5 mm plus BOP, both P < 0.05, and greater untreated decay (Chi-square 16.9, P < 0.001). Regarding behaviors, lacking a past 6-month dental visit was related to greater: BOP, PD ≥5 mm plus BOP, and PI ≥2 (F range 6.2-8.7, P < 0.01-0.05); and greater untreated decay (Chi-square 12.0, P < 0.001). Self-reported optimal oral hygiene was related to lower % BOP and PD ≥5 mm plus BOP (F range 4.5-6.7, both P < 0.05). Mediation analyses indicated that there were significant indirect effects of racial/ethnic differences on OH outcomes via having a recent dental visit (OR range 1.2-1.9). However, significant differences between the Hispanic and White groups remained.

CONCLUSIONS

This study highlights sociodemographic disparities in clinical OH during pregnancy, the importance of dental care, and provides useful findings for tailoring interventions for expectant mothers and their infants.