Short Dental Implants (5 to 7 mm) with Expandable Apex in the Posterior Maxilla—Preliminary Results

Short 6 mm dental implants are considered as an alternative to the maxillary sinus elevation and bone augmentation procedure where there is a reduced alveolar ridge height. The aim of this study was to compare the implant survival rate between short dental implants (6 mm) and regular length implants (11–13 mm) when placed in combination with bone grafting and loaded with a single non splinted crown, seven years after placing the implant. It was conducted as a controlled clinical study of 30 patients with partial edentulism in the posterior maxilla. The protocol included radiological and clinical evaluation of the C/I ratio (length of the superstructure divided by the length of the implant crestal part), marginal bone level (MBL), ultrasonography measurement of soft tissue surrounding implant (STT), patient-reported outcomes, and biological and technical complications. A total number of 28 implants (93%) remained integrated during follow-up period. MBL of 0.50 and 0.52 mm was observed for short implants and regular implants, respectively. MBL was checked for correlation with STT, and a negative correlation was found between MBL: STT. Our study has demonstrated a significantly lower implant survival rate for short implants compared to regular implants (87% compared to 100%). Despite the loss of several implants, good clinical results were achieved in the remaining implants in both groups. It is, therefore, worth considering short implants as an alternative to regular implants with a sinus lift surgery.

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Survival Rate of 1008 Short Dental Implants with 21 Months of Average Follow-Up: A Retrospective Study

Journal of Clinical Medicine ◽

10.3390/jcm9123943 ◽

2020 ◽

Vol 9 (12) ◽

pp. 3943

Author(s):

João Caramês ◽

Ana Catarina Pinto ◽

Gonçalo Caramês ◽

Helena Francisco ◽

Joana Fialho ◽

...

Keyword(s):

Retrospective Study ◽

Survival Rate ◽

Dental Implants ◽

Cox Regression ◽

Survival Rates ◽

High Survival ◽

Implant Survival ◽

Posterior Maxilla ◽

Clinical Records

This retrospective study evaluated the survival rate of short, sandblasted acid-etched surfaced implants with 6 and 8 mm lengths with at least 120 days of follow-up. Data concerning patient, implant and surgery characteristics were retrieved from clinical records. Sandblasted and acid-etched (SLA)-surfaced tissue-level 6 mm (TL6) or 8 mm (TL8) implants or bone-level tapered 8 mm (BLT8) implants were used. Absolute and relative frequency distributions were calculated for qualitative variables and mean values and standard deviations for quantitative variables. A Cox regression model was performed to verify whether type, length and/or width influence the implant survival. The cumulative implant survival rate was assessed by time-to-event analyses (Kaplan–Meier estimator). In all, 513 patients with a mean age of 58.00 ± 12.44 years received 1008 dental implants with a mean follow-up of 21.57 ± 10.77 months. Most implants (78.17%) presented a 4.1 mm diameter, and the most frequent indication was a partially edentulous arch (44.15%). The most frequent locations were the posterior mandible (53.97%) and the posterior maxilla (31.55%). No significant differences were found in survival rates between groups of type, length and width of implant with the cumulative rate being 97.7% ± 0.5%. Within the limitations of this study, the evaluated short implants are a predictable option with high survival rates during the follow-up without statistical differences between the appraised types, lengths and widths.

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The Use of 4-mm Implants Splinted to 10-mm Implants for Replacement of Multiple Missing Teeth in the Posterior Maxilla Region with Expanded Maxillary Sinus. An Observational Cases Series: Patient Characteristics and Preliminary Results

The International Journal of Periodontics & Restorative Dentistry ◽

10.11607/prd.4389 ◽

2021 ◽

Vol 41 (2) ◽

pp. 261-268

Author(s):

Rok Gašperšič ◽

Michel Dard ◽

Susy Linder ◽

Čedomir Oblak

Keyword(s):

Maxillary Sinus ◽

Patient Characteristics ◽

Missing Teeth ◽

Preliminary Results ◽

Posterior Maxilla

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Short dental implants as compared to maxillary sinus augmentation procedure for the rehabilitation of edentulous posterior maxilla: Three-year results of a randomized clinical study

Clinical Implant Dentistry and Related Research ◽

10.1111/cid.12563 ◽

2017 ◽

Vol 20 (1) ◽

pp. 9-20 ◽

Cited By ~ 15

Author(s):

Silvio Taschieri ◽

Alessandra Lolato ◽

Tiziano Testori ◽

Luca Francetti ◽

Massimo Del Fabbro

Keyword(s):

Clinical Study ◽

Maxillary Sinus ◽

Dental Implants ◽

Sinus Augmentation ◽

Randomized Clinical Study ◽

Maxillary Sinus Augmentation ◽

Posterior Maxilla ◽

Augmentation Procedure

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A Sinus Floor Reaugmentation Technique Around an Apically Exposed Implant Into the Maxillary Sinus

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-18-00271 ◽

2019 ◽

Vol 45 (3) ◽

pp. 213-217

Author(s):

Daisuke Ueno ◽

Noriko Banba ◽

Akira Hasuike ◽

Kazuhiko Ueda ◽

Toshiro Kodama

Keyword(s):

Case Report ◽

Maxillary Sinus ◽

Dental Implants ◽

Treatment Option ◽

Prolonged Treatment ◽

Sinus Cavity ◽

Posterior Maxilla ◽

Sinus Floor Augmentation ◽

Sinus Floor ◽

Recovery Approach

Sinus floor augmentation (SFA) is the most predictable treatment option in the atrophic posterior maxilla. However, exposure of the apical implant body into the maxillary sinus cavity is an occasionally observed phenomenon after SFA. Although most penetrating dental implants remain completely asymptomatic, they may induce recurrent rhinosinusitis or implant loss. Removal of the implant should be considered if there is significant implant exposure that results in prolonged treatment and increased costs. This case report demonstrates a recovery approach using sinus floor reaugmentation without implant removal in a patient with an apically exposed implant into the maxillary sinus cavity.

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Multivariate analysis of the influence of peri-implant clinical parameters and local factors on radiographic bone loss in the posterior maxilla: a retrospective study on 277 dental implants

Clinical Oral Investigations ◽

10.1007/s00784-020-03666-x ◽

2020 ◽

Author(s):

Mariane B. Sordi ◽

Vittoria Perrotti ◽

Flavia Iaculli ◽

Keila C. R. Pereira ◽

Ricardo S. Magini ◽

...

Keyword(s):

Logistic Regression ◽

Multivariate Analysis ◽

Bone Loss ◽

Dental Implants ◽

Clinical Parameters ◽

Partial Denture ◽

Local Factors ◽

Fixed Partial Denture ◽

Single Crown ◽

Posterior Maxilla

Abstract Objectives The aim of the present study was to investigate whether peri-implant clinical parameters (modified plaque index (mPI), bleeding and/or suppuration on probing (B/SOP)) and local factors (type of prostheses, screw emergence, platform diameter, and abutment angulation) might contribute to the development of additional bone loss and peri-implantitis around dental implants. Materials and methods Two hundred seventy-seven external hex connection implants placed in the posterior maxilla of 124 patients were retrospectively evaluated. They were divided into two groups: physiologic bone loss < 2 mm (PBL) or additional bone loss ≥ 2 mm (ABL). GEE logistic regression was applied to evaluate the influence of type of prostheses (implant-supported single crown (ISSC), fixed partial denture (ISFPD), and full denture (ISFD)) and clinical parameters (mPI and S/BOP) on bone loss. Results Among the 277 implants, 159 (57.4%) presented PBL and 118 (42.6%) presented ABL. Within the ABL group, 20.6% implants were diagnosed with peri-implantitis. mPI significantly correlated with the type of prosthesis and the highest value of mPI (index = 3) was observed in ISFD (23.8%). Moreover, peri-implantitis was more frequently associated with ISFD (32.79%) than ISSC and ISFDP (13.79% and 13.48, respectively) Conclusions ISFD in the posterior maxilla presented high rates of ABL and showed a higher prevalence of peri-implantitis. None of the local factors seemed to contribute to the development of these conditions. Further investigations are needed to prospectively support the results of the present study. Clinical relevance Patients rehabilitated with ISFD should be carefully monitored and have more frequent maintenance visits to prevent or control peri-implant bone loss.

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