Periodontal disease during pregnancy, such as gingivitis and periodontitis, can increase the risk of preterm birth and low birth weight (LBW). Recent research suggests that hormonal changes during pregnancy affect the periodontal tissue's response to local factors, worsening periodontal conditions, which can negatively impact pregnancy. Periodontal infection can trigger systemic inflammation, potentially leading to the spread of bacteria to the placenta and affecting fetal development. Oral health efforts in pregnant women have a significant impact on preventing low birth weight babies. One model that can be used to understand this action is the Health Action Process Approach (HAPA). This model emphasizes the importance of the transition from intention to actual action, encompassing two main phases: the motivational phase (involving intention formation) and the volitional phase (referring to planning and implementing the action). The urgency of the research is to analyze the influence of HAPA on the actions of pregnant women towards dental and oral health efforts in preventing the occurrence of LBW, so that in a certain period of time it will reduce the occurrence of stunting. Good oral health practices have the potential to contribute to the prevention of low birth weight (LBW), although postpartum self-monitoring results indicate that there was still 1 case of low birth weight (3.3%). This case is likely influenced by other multifactorial factors not entirely related to oral health, such as maternal nutritional status, gestational hypertension, or other medical history. HAPA is effectively used as a framework for behavioral interventions in The context of maternal dental health, particularly through strengthening volitional aspects such as action planning, self-monitoring, and action control, supports the sustainability of healthy behaviors after delivery.