A tooth can be attached on the day the implant is placed; when that restoration is put into functional contact with the opposing teeth within about a week, the protocol counts as immediate loading. Compared with early loading, which covers the window from about a week to two months after placement, the difference in implant survival and in bone level around the implant did not reach statistical significance.1
Compared with conventional loading, which begins two months after placement, implant survival is lower: pooled trials found a risk ratio of 0.974 (95% CI 0.954 to 0.994, p=.012) for implant survival with immediate loading versus conventional loading. Marginal bone, gum level, probing depth and implant stability showed no difference that reached statistical significance in either comparison, so the only measured cost of immediate loading is lower implant survival compared with conventional loading.1
What immediate loading means
The three protocols are defined by how soon the restoration is put into functional occlusal contact, not simply by which calendar day a crown is attached. Using the timing definitions set out by the International Team for Implantology, immediate loading means the restoration meets the opposing teeth in function within about a week of implant placement. Early loading covers the window from about a week to two months after placement. Conventional loading begins after two months. A restoration attached on the day of surgery but kept out of functional contact is immediate provisionalization, a related protocol that is distinct from the immediate loading measured in the trials below.
The trial evidence behind this page measured immediate loading against both of the other protocols rather than against one.1 That matters, because the pooled data show no significant difference against early loading but lower survival against conventional loading.
What the trials found
Against early loading, none of the measured outcomes showed a difference that reached statistical significance. Against conventional loading, one outcome did: implant survival.
| vs. early loading | vs. conventional loading | |
|---|---|---|
| Implant survival | Did not reach significance | Lower with immediate loading, RR 0.974 (95% CI 0.954–0.994), p=.0121 |
| Marginal bone | Did not reach significance | Did not reach significance |
| Gum level | Did not reach significance | Did not reach significance |
| Probing depth | Did not reach significance | Did not reach significance |
| Stability | Did not reach significance | Did not reach significance |
A risk ratio of 0.974 for implant survival, comparing immediate loading against conventional loading, is a narrow gap: it means implants loaded immediately survived slightly less often than implants left to heal under a conventional timeline, not that failure became common. Marginal bone, gum level, probing depth and stability showed no difference reaching statistical significance no matter which protocol immediate loading was measured against.1
In short
- Against early loading, no outcome measured showed a difference that reached statistical significance.
- Against conventional loading, implant survival was lower with immediate loading. The other outcomes still showed no difference reaching statistical significance.
When it is offered
Immediate loading depends on how firmly the fixture sits in the bone the moment it goes in. A fixture with strong initial stability can carry a crown right away. One without it cannot, regardless of which protocol the patient prefers.
Full-arch replacement has its own evidence, separate from the trials pooled in Table 1. A retrospective cohort of 943 patients and 5,989 implants loaded immediately, followed for an average of 5.0 ± 3.2 years, spanned both jaws. Within it, the mandibular subgroup of 2,954 implants showed five-year cumulative implant survival of 98.6% with four implants and 99.4% with six. That gap did not reach statistical significance (p=0.136).3 That result comes from a full-arch mandibular protocol and should not be compared directly with the figures above.
Zygomatic implants, anchored in the cheekbone instead of the upper jawbone, are a different procedure placed in a different site, and their loading-timing numbers come from a different kind of evidence than the trials above. In that evidence base, implants loaded immediately survived at 98.1% against 95% for implants loaded later (p=0.03), but the comparison is between separate observational study groups rather than a randomized trial of loading timing, and the groups also differ in follow-up length and treatment era. The same evidence base reports a 14.2% five-year rate of sinusitis as a complication.2 Zygomatic implants are covered on their own page.
Questions patients ask
Can any implant patient get a same-day crown?
No. The protocol depends on the implant sitting firmly in the bone right after placement. When it does not, the tooth is added later under early or conventional loading instead, and that call is often made in the operating chair rather than before it.
Is the crown fitted that day the final one?
Often not. What goes on immediately is frequently a temporary restoration, kept out of heavy bite contact while the bone bonds to the implant beneath it. The permanent crown usually follows once that healing is confirmed.
Does waiting longer make the implant safer?
Against early loading, the difference did not reach statistical significance. Against conventional loading, yes: pooled trials found a lower implant survival rate with immediate loading (risk ratio 0.974, 95% CI 0.954 to 0.994, p=.012, versus conventional loading), even though marginal bone and gum measurements showed no difference reaching statistical significance either way.1
References
- Chen J, Cai M, Yang J, Aldhohrah T, Wang Y. Immediate versus early or conventional loading dental implants with fixed prostheses: A systematic review and meta-analysis of randomized controlled clinical trials. Journal of Prosthetic Dentistry, 2019;122(6):516–536. doi:10.1016/j.prosdent.2019.05.013
- Brennand Roper M, et al. Long-term treatment outcomes with zygomatic implants: a systematic review and meta-analysis. International Journal of Implant Dentistry, 2023;9(1):21. doi:10.1186/s40729-023-00479-x
- Rapone B, Ferrara E, Tomarelli F, Giovannico G, Bacci C, Dalmaschio G, et al. Consensus Statement on Full-Arch Implant Rehabilitations: Evidence-Based Recommendations from the Italian Consensus Conference. Journal of Clinical Medicine, 2026;15(10):3695. doi:10.3390/jcm15103695
This page describes published clinical practice. It is not a treatment plan, and it does not replace an examination.