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Complications of Conventional Sinus Augmentation Techniques Versus Modified Osteotome Techniques in Dental Implant Surgery: A 3-Year Retrospective Clinical Study



Sinus Augmentation has proven to be a predictable and popular approach to overcome bone volume deficiency in the posterior maxilla for patients seeking dental implants. The most common surgical methods utilized for maxillary sinus augmentations are the lateral window approach and crestal osteotome technique, which may cause many complications like sinus membrane tear, bleeding, sinusitis, etc. the purpose of this study is to compare complications rates of different sinus lift techniques in dental implant surgery.

Aims and Objective

To assess the intraoperative and postoperative complications between the conventional direct or indirect method with alternative sinus lift techniques using Modified Crestal and Lateral (CAS & LAS KIT) ®method (Osstem/Hiossen).

Materials and Methods

This is a retrospective study where in all the sinus lift cases done during 3year duration in the center data was collected and analyzed a total of 61 sinus lift procedure was done and all the data is tabulated and analyzed.


Results show of the total 61 cases 25 (40%) male patients and 36(59%)female patients traditional techniques like summers osteotome and conventional direct or indirect method had 7 cases (33.3%-37.5%) complication rates compared to Modified Lateral osteotome had 2 complications (14.2%) & Modified Crestal osteotome had only 3 case(3.7%) infections, wound dehiscence, membrane tear etc


Modified Crestal & Lateral Osteotome (CAS KIT & LAS KIT) ® technique does reduce the incidence of complications like sinus membrane tear compared to conventional Direct and Indirect techniques, because of stopper system used in hydraulic lift and the special design of drill head of these instruments.

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Correspondence to Nida Ahmed.

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G.K, V., Reader, Ahmed, N. et al. Complications of Conventional Sinus Augmentation Techniques Versus Modified Osteotome Techniques in Dental Implant Surgery: A 3-Year Retrospective Clinical Study. J. Maxillofac. Oral Surg. (2022).

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  • Sinus lift techniques
  • Ridge resorption
  • Sinus augmentation
  • Dental implants