Short Implants and Conventional Implants in The Residual Maxillary Alveolar Ridge: A 36-Month Follow-Up Observation

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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A meta-analysis indicating extra-short implants (≤ 6 mm) as an alternative to longer implants (≥ 8 mm) with bone augmentation

Scientific Reports ◽

10.1038/s41598-021-87507-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Xiaoran Yu ◽

Ruogu Xu ◽

Zhengchuan Zhang ◽

Yang Yang ◽

Feilong Deng

Keyword(s):

Survival Rate ◽

Clinical Outcomes ◽

Meta Analysis ◽

Risk Of Bias ◽

Bone Augmentation ◽

Moderate Quality ◽

Short Implants ◽

Significant Difference ◽

Complications Rate

AbstractExtra-short implants, of which clinical outcomes remain controversial, are becoming a potential option rather than long implants with bone augmentation in atrophic partially or totally edentulous jaws. The aim of this study was to compare the clinical outcomes and complications between extra-short implants (≤ 6 mm) and longer implants (≥ 8 mm), with and without bone augmentation procedures. Electronic (via PubMed, Web of Science, EMBASE, Cochrane Library) and manual searches were performed for articles published prior to November 2020. Only randomized controlled trials (RCTs) comparing extra-short implants and longer implants in the same study reporting survival rate with an observation period at least 1 year were selected. Data extraction and methodological quality (AMSTAR-2) was assessed by 2 authors independently. A quantitative meta-analysis was performed to compare the survival rate, marginal bone loss (MBL), biological and prosthesis complication rate. Risk of bias was assessed with the Cochrane risk of bias tool 2 and the quality of evidence was determined with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. 21 RCTs were included, among which two were prior registered and 14 adhered to the CONSORT statement. No significant difference was found in the survival rate between extra-short and longer implant at 1- and 3-years follow-up (RR: 1.002, CI 0.981 to 1.024, P = 0.856 at 1 year; RR: 0.996, CI 0.968 to 1.025, P = 0.772 at 3 years, moderate quality), while longer implants had significantly higher survival rate than extra-short implants (RR: 0.970, CI 0.944 to 0.997, P < 0.05) at 5 years. Interestingly, no significant difference was observed when bone augmentations were performed at 5 years (RR: 0.977, CI 0.945 to 1.010, P = 0.171 for reconstructed bone; RR: 0.955, CI 0.912 to 0.999, P < 0.05 for native bone). Both the MBL (from implant placement) (WMD: − 0.22, CI − 0.277 to − 0.164, P < 0.01, low quality) and biological complications rate (RR: 0.321, CI 0.243 to 0.422, P < 0.01, moderate quality) preferred extra-short implants. However, there was no significant difference in terms of MBL (from prosthesis restoration) (WMD: 0.016, CI − 0.036 to 0.068, P = 0.555, moderate quality) or prosthesis complications rate (RR: 1.308, CI 0.893 to 1.915, P = 0.168, moderate quality). The placement of extra-short implants could be an acceptable alternative to longer implants in atrophic posterior arch. Further high-quality RCTs with a long follow-up period are required to corroborate the present outcomes.Registration number The review protocol was registered with PROSPERO (CRD42020155342).

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The Impact of Dental Implant Length on Failure Rates: A Systematic Review and Meta-Analysis

Materials ◽

10.3390/ma14143972 ◽

2021 ◽

Vol 14 (14) ◽

pp. 3972

Author(s):

Maha Abdel-Halim ◽

Dalia Issa ◽

Bruno Ramos Chrcanovic

Keyword(s):

Treatment Plan ◽

Meta Analysis ◽

Implant Failure ◽

Failure Rates ◽

Manual Search ◽

Short Implants ◽

The Many ◽

The Impact ◽

Implant Length

The present review aimed to evaluate the impact of implant length on failure rates between short (<10 mm) and long (≥10 mm) dental implants. An electronic search was undertaken in three databases, as well as a manual search of journals. Implant failure was the outcome evaluated. Meta-analysis was performed in addition to a meta-regression in order to verify how the risk ratio (RR) was associated with the follow-up time. The review included 353 publications. Altogether, there were 25,490 short and 159,435 long implants. Pairwise meta-analysis showed that short implants had a higher failure risk than long implants (RR 2.437, p < 0.001). There was a decrease in the probability of implant failure with longer implants when implants of different length groups were compared. A sensitivity analysis, which plotted together only studies with follow-up times of 7 years or less, resulted in an estimated increase of 0.6 in RR for every additional month of follow-up. In conclusion, short implants showed a 2.5 times higher risk of failure than long implants. Implant failure is multifactorial, and the implant length is only one of the many factors contributing to the loss of an implant. A good treatment plan and the patient’s general health should be taken into account when planning for an implant treatment.

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Volume Changes of Iliac Crest Autogenous Bone Grafts After Vertical and Horizontal Alveolar Ridge Augmentation of Atrophic Maxillas and Mandibles: A 6-Year Computerized Tomographic Follow-Up

Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.joms.2012.07.040 ◽

2012 ◽

Vol 70 (11) ◽

pp. 2559-2565 ◽

Cited By ~ 59

Author(s):

Carolina Sbordone ◽

Paolo Toti ◽

Franco Guidetti ◽

Luigi Califano ◽

Angela Santoro ◽

...

Keyword(s):

Iliac Crest ◽

Bone Grafts ◽

Autogenous Bone ◽

Alveolar Ridge ◽

Volume Changes ◽

Alveolar Ridge Augmentation ◽

Ridge Augmentation ◽

Autogenous Bone Grafts

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Melanotic Neuroectodermal Tumor of Infancy: a Clinicopathological Case Report

Brazilian Dental Journal ◽

10.1590/0103-6440201801787 ◽

2018 ◽

Vol 29 (4) ◽

pp. 400-404

Author(s):

Patrícia Maria Fernandes ◽

Rogério de Andrade Elias ◽

Alan Roger Santos-Silva ◽

André Caroli Rocha ◽

Pablo Augustin Vargas ◽

...

Keyword(s):

Quality Of Life ◽

Cell Types ◽

Neuroectodermal Tumor ◽

Alveolar Ridge ◽

Incisional Biopsy ◽

Epithelioid Cells ◽

Melanin Pigmentation ◽

Immunohistochemical Analyses

Abstract Melanotic neuroectodermal tumor of infancy (MNTI) is a rare neoplasm that affects mainly children under 1 year of age. A 4-month-old boy was referred for evaluation of a lesion with 1 month of evolution. Intra-oral examination detected a firm upon palpation submucosal nodular mass, measuring 1.5 cm in diameter, affecting the anterior maxillary alveolar ridge and covered by a slightly blue mucosa with evident telangiectasia. The patient underwent an incisional biopsy and histological and immunohistochemical analyses revealed nests of AE1/AE3 positive epithelioid cells with abundant melanin pigmentation. Other cell types, resembling neuroblasts, were also present and positive for CD56, synaptophysin and enolase. The diagnosis of MNTI was established and the patient was referred for treatment. Conservative surgical resection was performed along with 3 adjacent teeth under general anesthesia. The patient is in follow-up for 1,5 year without recurrence. Conservative surgical management of MNTI may be an alternative to maxillectomy, contributing to the patient´s quality of life.

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Calcifying odontogenic cyst associated with an antral pseudocyst: treatment of an uncommon case report and update of main findings

Revista Portuguesa de Estomatologia Medicina Dentária e Cirurgia Maxilofacial ◽

10.24873/j.rpemd.2021.06.838 ◽

2021 ◽

Vol 62 (2) ◽

Author(s):

Glória França ◽

◽

Dáurea Sena ◽

Juliana Pinheiro ◽

Rodrigo Rodrigues ◽

...

Keyword(s):

Excisional Biopsy ◽

Odontogenic Cyst ◽

Odontogenic Cysts ◽

Histopathological Diagnosis ◽

Alveolar Ridge ◽

Calcifying Odontogenic Cyst ◽

First Case ◽

Tumor Lesion ◽

Uncommon Case

A calcifying odontogenic cyst may be associated with odontogenic tumors, particularly odontomas. However, the association between calcifying odontogenic cysts and odontogenic cysts is rare. This study aims to report the first case of a calcifying odontogenic cyst associated with an antral pseudocyst. A male patient presented a tumor lesion in his right maxillary alveolar ridge with 6 months of evolution and painful symptoms . An excisional biopsy was performed, and a histopathological diagnosis of calcifying odontogenic cyst associated with an antral pseudocyst was issued. The treatment of choice was lesion enucleation and curettage. The patient has been under follow-up for about 3 years without lesion recurrence, which is typical indolent calcifying odontogenic cyst behavior.

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