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Targeted Assessment · Dental Implants · Osseointegration

Before a Dental Implant:
Getting the Odds on Your Side

Most dental implants succeed. An implant has to fuse with the jawbone (osseointegration). The things that most clearly change the odds are smoking, gum disease and diabetes. Low vitamin D has a real but uncertain link with early failure. This assessment checks what can be checked in a blood test, tells you what the evidence does and doesn’t support, and gives you a plan to take to your dentist and GP.

About 3% vs 6%Implants failing in non-smokers vs smokers, one large observational review (Chrcanovic 2015)
2.4×The odds of implant failure in smokers, in a review of 292 publications (Mustapha 2022). Observational.
6–8 weeksHow far ahead I suggest booking, so there’s time to test and act on results. Practice.
£295Pre-implant assessment fee
Who this is for

Anyone planning a dental implant who wants to know whether anything in their blood work is worth sorting out first

Bone fuses to the implant in stages: a clot forms, new woven bone grows onto the surface, then it remodels into mature bone over months. Vitamin D, vitamin K, zinc, magnesium and vitamin C all have roles in that biology. Mechanistic the cell and animal science makes sense, but for most of these nutrients there are no human trials showing that topping them up improves implant success. The exception with real human data is vitamin D, and even there the evidence is mixed (below).

The grades on this page: Strong good randomised trials agree. Mixed few, small, short, unblinded or conflicting trials. Observational: a link, not proof of cause. Mechanistic the biology makes sense but hasn’t been shown to change outcomes in people. None no usable evidence. Practice expert, guideline or coaching practice, not trial-tested. Established physiology: textbook biology where the deficiency disease is documented in people (scurvy; vitamin K deficiency bleeding).

What we assess

What I check, and what the evidence says

Vitamin D3
Vitamin D receptors on osteoblasts directly drive bone formation gene expression. For implants, reviews disagree: the largest found low vitamin D went with up to four times more early failures (Miron 2025); others found the results inconsistent (Alsulaimani 2022), or slightly more bone loss around the implant without being able to say whether more failed (Bazal-Bonelli 2022). Observational, mixed; trials are few. Whether vitamin D prevents failure in someone who isn’t deficient hasn’t been shown. My working range: 75–125 nmol/L (30–50 ng/mL), a clinical target, not official guidance.
UK deficiency cut-off: 25 nmol/L (10 ng/mL) (SACN 2016). Low winter levels are common.
Vitamin K
Vitamin K activates osteocalcin, a bone protein that binds calcium. Mechanistic I found no trial showing that vitamin K, or K2 taken with vitamin D, changes implant success. Pairing them is a common practice, not a proven rule.
Vitamin K also matters for blood clotting, so if you take warfarin, don’t add it without your prescriber.
Zinc
Zinc is needed by the bone-building cells and the immune response. Mechanistic In people, zinc tablets haven’t been shown to speed healing (six small leg-ulcer trials, Wilkinson 2014). Zinc is also hard to measure in one person: blood levels shift with meals, time of day and inflammation (King 2016). I test it to find a real deficiency, not to chase a number.
Magnesium
Much of the body’s magnesium sits in bone. The enzymes that convert vitamin D need it too. In one randomised trial, magnesium supplements nudged vitamin D blood levels up in people starting near 75 nmol/L (30 ng/mL) and down in those starting higher (Dai 2018). Mixed one trial, blood levels only, no bone or implant outcomes.
Long-term use of acid-suppressing PPIs can lower magnesium; the UK regulator advises doctors to consider checking it, especially alongside diuretics (MHRA). Don’t change a prescribed medicine yourself; ask your GP.
CRP and gum health
CRP is a general blood marker of inflammation. Inflammatory signals drive bone-resorbing cells in the lab. Mechanistic For implants, the 2017 World Workshop consensus found strong evidence that a history of gum disease, poor plaque control and no regular maintenance raise the risk of peri-implantitis, the gum-and-bone infection around an implant. It called the evidence for smoking and diabetes inconclusive for peri-implantitis specifically (Schwarz 2018). So the gums come first, with your dentist or hygienist. A raised CRP is worth understanding, but it hasn’t been shown to predict implant failure.
Vitamin C
Vitamin C is needed to build collagen, the framework that bone mineral is laid on. Without it wounds don’t heal (scurvy). Established physiology. In a trial in 88 people with pressure ulcers, high-dose vitamin C didn’t speed healing compared with a low dose (ter Riet 1995).
If you smoke: implants fail about twice as often in smokers (Chrcanovic 2015). Stopping is the single most useful change; your dentist or GP can help.
Blood sugar and bone medicines
In a review of 89 publications, implants in people with diabetes failed more often (OR 1.78), more so in type 1 (Al Ansari 2022). An earlier, smaller review of 14 found no significant difference (Chrcanovic 2014). Observational, mixed. Good control before the procedure is sensible either way; your GP or diabetes team leads on it.

Bisphosphonates (bone-protecting drugs) went with more failures in a review of 33 publications (OR 1.65) (Sulaiman 2023). Observational.
Don’t stop them. Tell your dentist, who will plan around them with your prescriber.
Targeted Assessment Service
DH Pre-Implant Nutritional Assessment
Blood chemistry · Written report · A plan for the weeks before placement · Follow-up through healing
What's included
Blood chemistry — vitamin D, zinc, magnesium, CRP, HbA1c and fasting glucose, full blood count
CRP and metabolic markers, read in context
Protein and collagen precursor adequacy assessment
Written interpretation report
A written plan: what to correct, what to raise with your dentist or GP, and whether any supplement is worth it for you, graded the same way as this page
Follow-up through the healing period
What you'll know
Your vitamin D status against the UK deficiency cut-off of 25 nmol/L (10 ng/mL) (SACN 2016) and my working range of 75–125 nmol/L (30–50 ng/mL), a clinical target, not official guidance
Whether you’re deficient in zinc or magnesium, read with the limits of a single blood test
Your blood sugar control (HbA1c), which matters before any surgery
Whether anything else in your bloods is worth raising with your GP or dentist
What the evidence does and doesn’t support, so you don’t spend money on things that haven’t been shown to help
Assessment fee
£295
Lab costs additional where applicable.
Book a free 20-minute call →
Evidence

How strong is the evidence?

ClaimGradeMain source
Smoking raises implant failureObservational, large, consistentChrcanovic 2015; Mustapha 2022
A history of gum disease, poor plaque control and no maintenance raise peri-implantitisConsensus “strong evidence” (observational studies)Schwarz 2018
Diabetes raises implant failureObservational, mixedAl Ansari 2022; Chrcanovic 2014
Bisphosphonates go with more failuresObservationalSulaiman 2023
Low vitamin D goes with more early failuresObservational, mixedMiron 2025; Alsulaimani 2022; Bazal-Bonelli 2022
Vitamin D supplements prevent failureMixed few trials (mostly animal)Werny 2022; Miron 2025
Magnesium changes vitamin D blood levelsMixed one RCT, blood levels onlyDai 2018
K2 with D3 is required, or improves implantsNone found—
Zinc, magnesium or K2 supplements improve implant successNone found—
Blood CRP predicts peri-implantitisNone found—

Chrcanovic 2014 and 2015, Mustapha, Al Ansari and Sulaiman come from one research group in Malmö: consistent, but not independent of each other.

Sources

  1. Al Ansari Y, Shahwan H, Chrcanovic BR. Diabetes mellitus and dental implants: a systematic review and meta-analysis. Materials (Basel) 2022;15:3227. PMID 35591561. doi:10.3390/ma15093227
  2. Alsulaimani L et al. The relationship between low serum vitamin D level and early dental implant failure: a systematic review. Cureus 2022;14:e21264. PMID 35178319. doi:10.7759/cureus.21264
  3. Bazal-Bonelli S et al. Influence of serum vitamin D levels on survival rate and marginal bone loss in dental implants: a systematic review. Int J Environ Res Public Health 2022;19:10120. PMID 36011753. doi:10.3390/ijerph191610120
  4. Chrcanovic BR et al. Diabetes and oral implant failure: a systematic review. J Dent Res 2014;93:859–67. PMID 24928096. doi:10.1177/0022034514538820
  5. Chrcanovic BR et al. Smoking and dental implants: a systematic review and meta-analysis. J Dent 2015;43:487–98. PMID 25778741. doi:10.1016/j.jdent.2015.03.003
  6. Dai Q et al. Magnesium status and supplementation influence vitamin D status and metabolism: results from a randomized trial. Am J Clin Nutr 2018;108:1249–58. PMID 30541089. doi:10.1093/ajcn/nqy274
  7. King JC et al. Biomarkers of Nutrition for Development (BOND): zinc review. J Nutr 2016;146:858S–885S. PMID 26962190. doi:10.3945/jn.115.220079
  8. MHRA. Proton pump inhibitors in long-term use: reports of hypomagnesaemia. Drug Safety Update, April 2012 (on GOV.UK 11 December 2014). gov.uk
  9. Miron RJ et al. Relationship between vitamin D deficiency and early implant failure and osseointegration. Periodontol 2000 2025 (online 30 October). PMID 41163589. doi:10.1111/prd.70017
  10. Mustapha AD et al. Smoking and dental implants: a systematic review and meta-analysis. Medicina (Kaunas) 2022;58:39. PMID 35056347. doi:10.3390/medicina58010039
  11. SACN. Vitamin D and health. 2016. gov.uk
  12. Schwarz F et al. Peri-implantitis. J Clin Periodontol 2018;45 Suppl 20:S246–66. PMID 29926484. doi:10.1111/jcpe.12954
  13. Sulaiman N et al. Bisphosphonates and dental implants: a systematic review and meta-analysis. Materials (Basel) 2023;16:6078. PMID 37763356. doi:10.3390/ma16186078
  14. ter Riet G et al. Randomized clinical trial of ascorbic acid in the treatment of pressure ulcers. J Clin Epidemiol 1995;48:1453–60. PMID 8543959. doi:10.1016/0895-4356(95)00053-4
  15. Werny JG et al. Does vitamin D have an effect on osseointegration of dental implants? A systematic review. Int J Implant Dent 2022;8:16. PMID 35403929. doi:10.1186/s40729-022-00414-6
  16. Wilkinson EAJ. Oral zinc for arterial and venous leg ulcers. Cochrane Database Syst Rev 2014;(9):CD001273. PMID 25202988. doi:10.1002/14651858.CD001273.pub3
Further reading

The clinical evidence behind this service

Clinical Essay
Before a Dental Implant: Vitamin D, Smoking and What Else Matters
Clinical Essay
Before Your Operation: What Nutrition Can and Can’t Do
Clinical Diagram
The Wound Healing Cascade — And the Nutrition Each Phase Needs
Test
Blood Chemistry — The Markers That Matter

I sell testing and consultations, including this assessment, so I declare an interest: the grades on this page apply to them too.

I don’t sell supplements. I recommend them, choosing the supplier on quality, dose, ingredients, value and what’s in stock. One supplier pays me a commission on its own brand, which I don’t always choose, and my resources page has a few Amazon affiliate links. Neither decides what I recommend.

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