Home | About us | Editorial board | Ahead of print | Current issue | Archives | Search | Submit article | Instructions | Subscribe | Advertise | Contact us |  Login 
National Journal of Maxillofacial Surgery
Print this page Email this page Small font sizeDefault font sizeIncrease font size
Users Online: 3804
Year : 2022  |  Volume : 13  |  Issue : 3  |  Page : 347-356

Sandwich osteotomy with interpositional grafts for vertical augmentation of the mandible: A meta-analysis

1 Department of Oral and Maxillofacial Surgery, Dental Institute Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
2 Department of Oral and Maxillofacial Surgery, Career Post Graduate Institute of Dental Science and Hospital, Lucknow, UP, India
3 Faculty of Dental Sciences, Unit of Oral and Maxillofacial Surgery, Institute of Medical Sciences Banaras Hindu University, Varanasi, UP, India
4 Faculty of Dental Sciences, Unit of Prosthodoontics, Institute of Medical Sciences Banaras Hindu University, Varanasi, UP, India

Correspondence Address:
Dr. Rathindra Nath Bera
E-10 Aurobindanagar, Judges Court Medinipur, West Bengal - 721 101
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njms.njms_489_21

Rights and Permissions

Sandwich osteotomy is a technique for vertical augmentation based on the principle of a graft being placed between two pedicled native bones. The inherent vascularization helps in graft consolidation. The aim is to review the bone height gained, implant survival and pitfalls with sandwich osteotomy. The PICO model was used to identify the suitable studies for the review. Oxford level of evidence, Newcastle Ottawa Scale and Cochrane's tool for Systematic Reviews of Interventions was applied for identifying study quality. Meta-analysis was performed with the help of RevMan. Funnel plot was used to evaluate publication bias and bias during article selection. Difference in means was used as principal summary measure. Fixed effects model with inverse variance statistics was used. I2test statistics was applied to identify study heterogeneity. Forest plots were produced for the outcome variables with 95% confidence interval (CI) and overall treatment effects and subgroup effects at a significance level of 0.05. The overall implant survival rate ranged from 90%-100% and prosthetic survival rate from 87%-95%. An overall 6-10mm of bone can be gained in the anterior mandible and 4-8mm in the posterior mandible. A total of 1030 implants were placed of which 988 implants survived after the mean follow up periods (odds ratio: 0.77, 95% CI: 0.49-1.21). Implant survival is independent of the graft being used. Vertical augmentation in the posterior mandible is limited compared to anterior owing to the presence of inferior alveolar nerve and the keratinized tissue deficiency.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded32    
    Comments [Add]    

Recommend this journal