The tooth stays yours. Roughly 97 in 100 treated teeth are still in the mouth eight years on 1. Stricter counts that demand a fully healed root tip on x-ray still land in the high eighties to low nineties at a decade 2. That is unusually solid for a dental procedure.
The crown is not optional. A treated back tooth left without a crown fails about six times more often than one that got capped 3. The root canal and the crown are one package.
Against an implant it's a wash. Head-to-head, saving the tooth and replacing it with a single implant come out roughly even long-term, with the implant needing more touch-up work over the years 4.
The one thing to insist on: get the crown, and get it fast.
The arc is short then long.
- Days: the toothache ends and you sleep on that side again. About four in ten feel some soreness the first day, one in ten at a week, almost none beyond 5.
- Months: the bone around the root tip rebuilds itself.
- Years: the tooth is still there, and so is the ligament suspending it, so you still feel a poppy seed when you chew. An implant fused to bone can't do that.
The honest catch is cost. With the crown, budget roughly $2,000 to $3,500 per tooth in the US. Insurance usually pays a fraction and the annual cap eats the rest. The alternatives aren't cheaper: a single-tooth implant runs $4,000 to $6,000 and months of healing, and a bridge means grinding down two healthy neighbours permanently.
The fine print — when to skip it, and what people get wrong
Root canals don't cause heart disease, cancer, or autoimmune illness; the "focal infection" idea was debunked long ago 6, 7. You also can't skip the procedure by riding out an abscess on antibiotics; they don't meaningfully cut the pain 8.
The avoidable failure is deferring the crown until the brittle tooth splits 3. The subtle one is a missed hidden canal in an upper molar, common enough to need a microscope 9.
Almost no medical condition is an absolute stop; local anesthesia handles it well. Tell the dentist about blood thinners and bisphosphonates before they start.
- 1Salehrabi R, Rotstein I (2004). Endodontic treatment outcomes in a large patient population in the USA: an epidemiological study. Journal of Endodontics. link
- 2Ng et al. (2010). Tooth survival following non-surgical root canal treatment: a systematic review of the literature. International Endodontic Journal. link
- 3Aquilino SA, Caplan DJ (2002). Relationship between crown placement and the survival of endodontically treated teeth. Journal of Prosthetic Dentistry. link
- 4Iqbal MK, Kim S (2007). For teeth requiring endodontic treatment, what are the differences in outcomes of restored endodontically treated teeth compared to implant-supported restorations? International Journal of Oral and Maxillofacial Implants. link
- 5Pak JG, White SN (2011). Pain prevalence and severity before, during, and after root canal treatment: a systematic review. Journal of Endodontics. link
- 6Easlick KA (1951). An evaluation of the effect of dental foci of infection on health. Journal of the American Dental Association. link
- 7AAE (2017). AAE Position Statement: Root Canal Safety. link
- 8Cope et al. (2018). Systemic antibiotics for symptomatic apical periodontitis and acute apical abscess in adults. Cochrane Database of Systematic Reviews. link
- 9Aminoshariae A, Kulild JC (2017). Premolars with two root canal systems: a literature review of the anatomy, treatment, and reporting standards. Journal of Endodontics. link
Root Canal Treatment
One or two ~60-90 minute visits under local anesthesia; sore jaw for a day or two; no ongoing maintenance effort once the crown is seated.
Abolition of pulpal pain and resolution of periapical infection are the proximate effects; Pak & White 2011 systematic review shows pre-treatment pain prevalence falling toward single digits within a week and continuing to drop. Eliminates a chronic low-grade oral infection.
Salehrabi & Rotstein 2004 analyzed 1.46M teeth (97% retention at 8 years); Ng et al. 2010 systematic review found 86-93% tooth survival at 8-10 years; AAE-backed standard of care, broadly aligned across the practising community. Held at 4 rather than 5 because procedure-comparison RCTs are methodologically limited and the higher-end claims-data numbers conflate retention with healing.
US 2020s: RCT $700-2,000 plus required crown $1,000-2,500; total typically $2,000-3,500 per tooth. Dental insurance covers a fraction; annual benefit caps often eat what's left.
Eliminates a chronic apical-periodontitis inflammation source and forecloses rare-but-life-threatening deep-space spread (Ludwig's angina). Caplan 2006 found an association between number of endodontic lesions and coronary heart disease incidence in a male cohort; the longevity contribution is small additive but real.
Pulpal pain reliably wakes the patient or blocks sleep onset (lying down raises pulp pressure). Resolution restores normal sleep — a small but real effect at population level, large for the symptomatic individual.
Chronic pain plus the perceived threat of losing a tooth erodes mood and stress resilience; both end on successful treatment. Small but real population-level mood lift mediated by pain relief and threat removal.
Tooth retention preserves alveolar bone and prevents the adjacent-tooth drift and supra-eruption that follow extraction; the cumulative effect on lip support and lower-face proportions over decades is real but small relative to lifestyle drivers.
Chronic toothache and low-grade infection drain daily energy; resolution restores baseline. Trivial-to-small at population level beyond the pain-relief mechanism.
Active toothache disrupts attention; clearing it removes that disruption. Trivial cognitive change beyond direct pain relief.