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A cohort study on short mini-implants for mandibular overdentures compared to those of standard length.
Clin Oral Implants Res. 2020 Feb; 31(2):121-132.CO

Abstract

OBJECTIVES

To assess peri-implant bone level, survival and success rates of short (6 or 8 mm long) one-piece mini-implants (MDIs) in edentulous patients with extremely resorbed alveolar ridge (interforaminal height <10 mm) rehabilitated with mandibular implant overdentures and to compare them with patients having standard length MDIs in 1-year prospective clinical study.

MATERIAL AND METHODS

The Short MDI group consisted of 28 participants with interforaminal height ≤10 mm. Implants being, both, short and slim (short MDIs: 6 or 8 mm long, 2 or 2.5 mm wide) were inserted. The Standard-MDI group included 35 participants (interforaminal height >13 mm) who received standard length MDIs (10-14 mm long, 2 or 2.5 mm wide). Primary outcomes were assessments of MDI peri-implant bone level, survival and success rates; secondary outcomes were assessments of peri-implant tissue, oral hygiene, and prosthodontic maintenance.

RESULTS

The Short MDI group had mean marginal bone loss (MBL) of 0.26 ± 0.35 mm, 6.4% of failure, and 92.6% of, both, success and survival rates. The Standard-MDI group had mean MBL of 0.34 ± 0.40 mm, 5% of failure, 95% of survival, and 94.3% success. There were no significant differences in MBL (p = .420), survival (p = .414), and success (p = .571) between the groups. The Short MDI group had significantly less plaque (p = .001) and bleeding on probing (p < .001).

CONCLUSION

Within the limitations of this study, short MDIs (6 or 8 mm long) in extremely atrophied mandibles (interforaminal height <10 mm) showed good clinical results in the first year of function.

Authors+Show Affiliations

Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia.Department of Prosthodontics, School of Dental Medicine & Clinical Hospital Centre Zagreb, University of Zagreb, Zagreb, Croatia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31541517

Citation

Kovačić, Ines, et al. "A Cohort Study On Short Mini-implants for Mandibular Overdentures Compared to Those of Standard Length." Clinical Oral Implants Research, vol. 31, no. 2, 2020, pp. 121-132.
Kovačić I, Peršić S, Kranjčić J, et al. A cohort study on short mini-implants for mandibular overdentures compared to those of standard length. Clin Oral Implants Res. 2020;31(2):121-132.
Kovačić, I., Peršić, S., Kranjčić, J., & Čelebić, A. (2020). A cohort study on short mini-implants for mandibular overdentures compared to those of standard length. Clinical Oral Implants Research, 31(2), 121-132. https://doi.org/10.1111/clr.13542
Kovačić I, et al. A Cohort Study On Short Mini-implants for Mandibular Overdentures Compared to Those of Standard Length. Clin Oral Implants Res. 2020;31(2):121-132. PubMed PMID: 31541517.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A cohort study on short mini-implants for mandibular overdentures compared to those of standard length. AU - Kovačić,Ines, AU - Peršić,Sanja, AU - Kranjčić,Josip, AU - Čelebić,Asja, Y1 - 2019/10/08/ PY - 2019/04/01/received PY - 2019/09/12/revised PY - 2019/09/13/accepted PY - 2019/9/22/pubmed PY - 2020/2/8/medline PY - 2019/9/22/entrez KW - 1-year clinical outcomes KW - extremely atrophied mandible KW - mandibular overdenture KW - peri-implant bone loss KW - short one-piece mini-implants KW - success KW - survival SP - 121 EP - 132 JF - Clinical oral implants research JO - Clin Oral Implants Res VL - 31 IS - 2 N2 - OBJECTIVES: To assess peri-implant bone level, survival and success rates of short (6 or 8 mm long) one-piece mini-implants (MDIs) in edentulous patients with extremely resorbed alveolar ridge (interforaminal height <10 mm) rehabilitated with mandibular implant overdentures and to compare them with patients having standard length MDIs in 1-year prospective clinical study. MATERIAL AND METHODS: The Short MDI group consisted of 28 participants with interforaminal height ≤10 mm. Implants being, both, short and slim (short MDIs: 6 or 8 mm long, 2 or 2.5 mm wide) were inserted. The Standard-MDI group included 35 participants (interforaminal height >13 mm) who received standard length MDIs (10-14 mm long, 2 or 2.5 mm wide). Primary outcomes were assessments of MDI peri-implant bone level, survival and success rates; secondary outcomes were assessments of peri-implant tissue, oral hygiene, and prosthodontic maintenance. RESULTS: The Short MDI group had mean marginal bone loss (MBL) of 0.26 ± 0.35 mm, 6.4% of failure, and 92.6% of, both, success and survival rates. The Standard-MDI group had mean MBL of 0.34 ± 0.40 mm, 5% of failure, 95% of survival, and 94.3% success. There were no significant differences in MBL (p = .420), survival (p = .414), and success (p = .571) between the groups. The Short MDI group had significantly less plaque (p = .001) and bleeding on probing (p < .001). CONCLUSION: Within the limitations of this study, short MDIs (6 or 8 mm long) in extremely atrophied mandibles (interforaminal height <10 mm) showed good clinical results in the first year of function. SN - 1600-0501 UR - https://www.unboundmedicine.com/medline/citation/31541517/A_cohort_study_on_short_mini-implants_for_mandibular_overdentures_compared_to_those_of_standard_length L2 - https://doi.org/10.1111/clr.13542 DB - PRIME DP - Unbound Medicine ER -