Mini Dental Implants: When They Help and When They Don’t
Mini dental implants are implants less than 3 mm wide[1] (one consensus uses less than 2.5 mm[2]). In a 2018 meta-analysis they survived significantly less often than standard implants, while narrow implants of 3.0–3.5 mm showed no difference[1]. At Ulubey Dental Clinic in Antalya we use mini implants rarely: for older patients with thin bone, when more extensive surgery such as bone grafting should be avoided. For most thin ridges, a narrow-diameter implant or a bone graft is the better-documented route; the examination decides.
- 1. Mini, narrow and short implants: the definitions
- 2. What the evidence shows
- 3. Mini implants to hold a denture
- 4. Short implants: the other way round thin bone
- 5. Who mini dental implants may suit, and who not
- 6. Mini and narrow implants at our clinic
- 7. Cost and what is included
- 8. Questions to ask before you agree to mini implants
- 9. Frequently asked questions
- 10. Sources
Mini, narrow and short implants: the definitions
A standard dental implant is a titanium screw roughly the width of a tooth root. When the jawbone has become thin, for example after many years without teeth or under a removable denture, there may not be room for a standard implant. Three answers exist: a thinner implant, a shorter implant, or rebuilding the bone first with a dental bone graft.
The names are used loosely in advertising, so it helps to know how researchers define them. A 2018 systematic review sorted narrow-diameter implants into three categories by width[1]; the ITI consensus conference in the same year used slightly different cut-offs[2]:
| Category | Width or length | Typical use described in the research |
|---|---|---|
| Mini implant (narrow, category 1) | Under 3.0 mm wide[1] (under 2.5 mm in the ITI consensus[2]) | Mainly the very thin (highly atrophic) upper or lower jaw[1] |
| Narrow implant, category 2 | 3.0–3.25 mm[1] | Mostly single front teeth with little space between the neighbours[1] |
| Narrow implant, category 3 | 3.3–3.5 mm[1] | All regions, including single back teeth[1] |
| Short implant | 6 mm long or less (ITI)[2]; under 7 mm in other reviews[5] | Reduced bone height, to avoid augmentation surgery[2] |
Widths are the part of the implant inside the bone. Manufacturers name their products differently, so ask for the exact width and length of the implant planned for you.
What the evidence shows
The width of an implant matters because a thinner screw has less surface in contact with the bone and less metal to resist bending. The research reflects this:
| Implant type | Result | Source and limits |
|---|---|---|
| Mini implants (under 3.0 mm) | Mean survival 94.7%; statistically significantly lower than standard implants (odds ratio 4.54) | 16 studies in the meta-analysis; high risk of bias[1] |
| Narrow implants 3.0–3.25 mm | Mean survival 97.3%; no significant difference from standard implants | Long-term data missing[1] |
| Narrow implants 3.3–3.5 mm | Mean survival 97.7%; no significant difference from standard implants | Long-term data missing[1] |
| Short implants (6 mm or less) | Survival 86.7%–100% vs 95%–100% for standard implants over 1–5 years | Higher variability and lower predictability[2] |
Survival means the implant is still in place; it does not mean that no complication occurred. Results from studies describe groups of patients, not your individual outcome.
The ITI consensus concluded that implants 2.5 mm wide or more showed no difference in survival from standard implants, while implants under 2.5 mm had lower survival[2]. Both reviews say the same thing in practice: the thinner the implant, the more careful the case selection has to be.
Mini implants to hold a denture
Most research on mini implants concerns one use: holding a removable denture in place, usually in the lower jaw. A 2025 review of 39 studies covered 3,787 mini implants under 1,026 overdentures in 1,005 patients[3]. It found:
- a 7-year cumulative implant survival of 91.4%[3];
- lower survival in the upper jaw than in the lower jaw, and lower survival with 2 mini implants than with 4 in the lower jaw[3];
- a high rate of denture fracture and wear of the attachment parts, so these dentures may need frequent maintenance visits[3].
A 2024 review of five randomised trials in people wearing a lower complete denture found that mini implants were a workable alternative to standard implants for retention. In the two trials that reported it, implant survival was 89%–98% for mini implants and 99%–100% for standard implants, over follow-up periods of up to 12 months[4].
If you are deciding between a denture held by implants and other options, our guide to dental implants vs dentures and our dentures in Antalya page explain the choices.
Short implants: the other way round thin bone
When the bone is low rather than narrow, for example above the nerve in the lower jaw or under the sinus in the upper jaw, the alternative to augmentation is a shorter implant. The ITI consensus called short implants (6 mm or less) a valid option to avoid the morbidity of augmentation surgery, with higher variability and lower predictability in survival[2].
A 2020 meta-analysis of nine randomised trials followed for 5 to 10 years found short implants (under 7 mm) survived less well than longer ones overall, with the difference mainly in the upper jaw; in the lower jaw survival was similar[5]. Short implants had fewer biological complications and more technical complications[5]. The authors asked readers to interpret the results with caution because the numbers were small[5].
The alternatives in the upper back jaw are explained in our sinus lift in Antalya guide.
Who mini dental implants may suit, and who not
Mini implants are a compromise. They can avoid a bone graft, but they carry less load and the evidence for them is weaker than for standard and narrow implants[1][2]. That is why we keep them for a small group of patients.
- Older patients whose bone has become thin, for whom bone grafting or other extensive surgery should be avoided.
- Situations where an implant solution is needed but the ridge is too thin even for a narrow-diameter implant.
- After a full discussion of the alternatives: a narrow-diameter implant, a bone graft, or a denture without implants.
- Untreated gum disease: gum disease is treated before any implant; see gum disease.
- A narrow implant or a graft would fit: both have stronger evidence than mini implants[1][2].
- Heavy biting forces or grinding: a thin implant has less metal to resist bending; see teeth grinding (bruxism).
- Smoking and uncontrolled diabetes: these affect implant healing in general; see who can get dental implants.
Mini and narrow implants at our clinic
Dr. Ali Cem Ulubey and Dr. Surur Ulubey examine every patient themselves; there are no rotating dentists. Before any implant we take a panoramic X-ray, and when a case needs a 3D (CBCT) scan, Dr. Ali Cem Ulubey reviews it to measure the width and height of the bone.
- Mini implants: used rarely, only when needed: for older patients with thin bone, where advanced surgery should be avoided and an implant solution is still required.
- Narrow-diameter implants: when a ridge is too thin for a standard implant, a narrow-diameter implant may avoid or reduce bone grafting. How we choose the system is explained under narrow-diameter implants in our implant brands guide.
- Implant-retained dentures: we make them when they are necessary, but they are not our first choice; we discuss fixed options first.
- Stability check: we measure implant stability during treatment.
- Records: every implant patient receives the manufacturer’s international implant passport in English, with the original label of each implant (brand, width, length, LOT and REF).
- Short implants: we place short implants (6 mm or less) rarely; they are not our first-choice option.
Cost and what is included
| Item | Price | Notes |
|---|---|---|
| Standard or narrow implant, by brand | €300–€1,000 | Nucleoss €300 · Neodent €400 · Straumann BLT €800 · Straumann BLX €1,000; standard abutment and Ti-base included |
| Mini implant | Written quote | System and number of implants depend on the case |
| Bone graft (particulate) | €150 per cc | The graft route, when it is chosen instead |
| Zirconia crown (Amann Girrbach) | €185 | Crown on top of a fixed implant, priced separately |
Prices are indicative; your final written quote follows the examination and X-rays and is valid for 30 days. Unless the treatment plan changes, the written price does not change.
Your quote lists every item separately. The full list is on our dental treatment prices page, and the single implant cost calculator gives an estimate for one tooth.
Guarantee
The implant fixture carries the manufacturer’s lifetime guarantee. Amann Girrbach zirconia crowns and bridges made at our AG partner lab carry a 10-year fracture guarantee (AG-backed); crowns and bridges in other materials carry a 5-year clinic guarantee. Crown and bridge guarantees exclude fracture due to bruxism (teeth grinding), and patients who grind their teeth must wear the night guard we provide. All guarantees are conditional on attending the recommended check-ups and cover the prosthesis, not the root canal or filling beneath. Healing is biological: smoking, uncontrolled diabetes and gum health affect the result, and a fixture guarantee does not mean that every implant integrates. The full terms are on our written dental guarantee page.
Questions to ask before you agree to mini implants
- What is the exact width and length of the implant planned for me, and which system is it?
- Why a mini implant rather than a narrow implant or a bone graft in my case?
- Will the implants hold a removable denture or a fixed tooth, and how many are planned?
- What maintenance will the denture or attachments need, and how often?
- Will I receive an implant passport with the original labels?
The same questions are useful for any implant plan; our clinic verification checklist lists more.
Frequently asked questions
What is a mini dental implant?
A mini dental implant is an implant less than 3 mm wide, according to a 2018 systematic review; the ITI consensus uses less than 2.5 mm. It is thinner than a standard implant, so it can fit into a narrow ridge, but it has less surface in contact with the bone. Implants of 3.0 to 3.5 mm are called narrow implants, not mini implants.
Are mini implants as good as regular implants?
Not on current evidence. In a 2018 meta-analysis, mini implants under 3 mm had a mean survival of 94.7% and survived significantly less often than standard implants, while narrow implants of 3.0 to 3.5 mm showed no difference. The included studies had a high risk of bias and long-term data are limited.
Do you place mini implants in Antalya?
Yes, but rarely. At Ulubey Dental Clinic we use mini implants only when needed: for older patients with thin bone, where more extensive surgery such as bone grafting should be avoided and an implant solution is still required. For most thin ridges we first consider a narrow-diameter implant or a bone graft.
Can mini implants hold a denture?
Most research on mini implants concerns this use, mainly in the lower jaw. A 2025 review of 39 studies found a 7-year implant survival of 91.4%, lower in the upper jaw, and a high rate of denture fracture and attachment wear, so these dentures may need frequent maintenance visits.
How much do mini implants cost?
Mini implants at our clinic are priced in a written quote, because the system and number of implants depend on the case. Standard and narrow implants cost €300 to €1,000 by brand, including the standard abutment and Ti-base. The written quote follows the examination and X-rays and is valid for 30 days.
Are short implants an alternative to a bone graft?
They can be. The ITI consensus called short implants of 6 mm or less a valid option to avoid augmentation surgery, with higher variability in survival. A 2020 meta-analysis found lower survival than longer implants in the upper jaw and similar survival in the lower jaw. Which route suits you is decided after examination.
Sources
- Schiegnitz E, Al-Nawas B. Narrow-diameter implants: a systematic review and meta-analysis. Clin Oral Implants Res. 2018;29 Suppl 16:21-40. PMID 30328192. pubmed.ncbi.nlm.nih.gov/30328192
- Jung RE, Al-Nawas B, Araujo M, et al. Group 1 ITI Consensus Report: the influence of implant length and design and medications on clinical and patient-reported outcomes. Clin Oral Implants Res. 2018;29 Suppl 16:69-77. PMID 30328189. pubmed.ncbi.nlm.nih.gov/30328189
- Mohammadi M, Baker E, Chrcanovic BR. Clinical and radiographic outcomes of mini-implant-retained maxillary and mandibular overdentures: a systematic review and meta-analysis. Clin Oral Investig. 2025;29(3):164. PMID 40024990. pubmed.ncbi.nlm.nih.gov/40024990
- Aljudaibi SM, Alqhtani MAZ, Almeslet AS, et al. Retention of mandibular complete overdentures using mini dental implants (Ø < 3 mm) and standard diameter implants (Ø > 3 mm): a systematic review and meta-analysis of randomised controlled trials. Oral Health Prev Dent. 2024;22:181-188. PMID 38713458. pubmed.ncbi.nlm.nih.gov/38713458
- Xu X, Huang J, Fu X, et al. Short implants versus longer implants in the posterior alveolar region after an observation period of at least five years: a systematic review and meta-analysis. J Dent. 2020;100:103386. PMID 32479956. pubmed.ncbi.nlm.nih.gov/32479956
This article is general patient information and does not replace a clinical examination or X-rays.
Editor contact: [email protected] · ulubeydental.com/contact-us
