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Mouth BODY HANDBOOK
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Oral Health in Pregnancy
Your gums bleed when you brush and puff up plum-red along the tooth line, and you're not doing anything wrong: two-thirds of pregnant women get this, the hormone surge making the gum overreact to plaque it used to tolerate Wu 2015. The fix is the same brush-floss-cleaning you'd do anyway. The part almost nobody hears is that the dentist visit you've been afraid to book is safe in every trimester, and booking it is one of the things you do for the baby.
Do Β· Course Evidence Moderate Chapter Mouth

Pregnancy gingivitis is biology, not bad brushing. Progesterone and oestrogen climb roughly ten- and thirty-fold, both act on gum tissue, and one plaque bug feeds on the hormones directly 1. It shows up by the second month and fades after birth 2.

Gum disease travels with worse pregnancy outcomes. Preterm birth and low birthweight run higher, preeclampsia roughly triples, and mouth bacteria have been recovered from the placenta 3 4 5.

But cleaning the gums during pregnancy doesn't reliably prevent preterm birth. The big trials came up empty 6; only treating it early, before it advances, shows a signal 7. Treat the gums for the gums. The baby benefit is a bonus you can't bank on.

The home care is ordinary. The visit is the part people skip.

And if something already needs treating, a cavity or a root canal or an abscess, treat it now. Postponing is the risky choice.

What good care buys you. Within a couple of weeks the pink on the toothbrush thins and stops, the puffy gum line fades, and the flinch when you floss goes away. By the second half of pregnancy, when hormones peak, your mouth is responding to care instead of losing.

The longer arc is quieter. The bone around the teeth doesn't recede faster than it should. And the toddler whose first dental check comes at age three gets back a clean exam, because the bacterial load you carried into their mouth was smaller.

The fine print β€” when to skip it, and what people get wrong

"A tooth per baby" is folklore. An erupted tooth isn't a calcium bank; shortfalls draw from bone, never teeth. Tooth loss comes from gum disease and cavities.

Dental work isn't unsafe. Cleanings, fillings, root canals, local anaesthetic, and X-rays with a lead apron are safe in any trimester; a dental X-ray is about half a day of background radiation 9 10.

Defer to after birth: whitening, veneers, other cosmetic work, elective amalgam removal, and first-trimester nitrous oxide. Everything else, including emergencies, is fine when needed 9.

Stopping brushing when gums bleed feeds the plaque; switch to a softer brush and keep going. Brushing after vomiting scrubs acid-softened enamel; rinse and wait. Postponing a needed procedure turns one appointment into a hospital admission by week 36.

References
  1. 1Adriaens LM, Alessandri R, SpΓΆrri S, Lang NP, Persson GR (2009). Does pregnancy have an impact on the subgingival microbiota? Journal of Periodontology. link
  2. 2Wu M, Chen SW, Jiang SY (2015). Relationship between gingival inflammation and pregnancy. Mediators of Inflammation. link
  3. 3Daalderop LA, Wieland BV, Tomsin K, Reyes L, Kramer BW, Vanterpool SF, Been JV (2018). Periodontal disease and pregnancy outcomes: overview of systematic reviews. JDR Clinical & Translational Research. link
  4. 4Konopka T, Zakrzewska A (2020). Periodontitis and risk for preeclampsia β€” a systematic review. Ginekologia Polska. link
  5. 5Han YW, Redline RW, Li M, Yin L, Hill GB, McCormick TS (2004). Fusobacterium nucleatum induces premature and term stillbirths in pregnant mice: implication of oral bacteria in preterm birth. Infection and Immunity. link
  6. 6Michalowicz BS, Hodges JS, DiAngelis AJ, Lupo VR, Novak MJ, Ferguson JE, et al. (2006). Treatment of periodontal disease and the risk of preterm birth. New England Journal of Medicine. link
  7. 7Le QA, Eslick GD, Coulton KM, Akhter R, Condous G, Eberhard J, Nanan R (2021). Does treatment of gingivitis during pregnancy improve pregnancy outcomes? A systematic review and meta-analysis. Oral Health and Preventive Dentistry. link
  8. 8Lin YT, Yang YH, Hung CC, Chen LJ, Chen YH (2016). Effect of maternal use of chewing gums containing xylitol on transmission of mutans streptococci in children: a meta-analysis of randomized controlled trials. International Journal of Paediatric Dentistry. link
  9. 9ACOG Committee on Health Care for Underserved Women (2013). Committee Opinion No. 569: Oral health care during pregnancy and through the lifespan. Obstetrics & Gynecology. link
  10. 10American Dental Association (2022). Oral health topics: Pregnancy. link
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