title: Postsurgical consequences in lower third molar surgical extraction using micromotor and piezosurgery.
abstract: BACKGROUND
  One of the most critical and crucial steps in surgical extraction is cutting the bone or osteotomy, for which many techniques are used, e.g., chisels and mallet, rotary instruments, and ultrasound bone-cutting instruments. If they are not used judiciously, they can be hazardous.
  
  
  OBJECTIVE
  To assess the efficiency of piezosurgery unit over micromotor while performing surgical extraction of lower third molars by assessing the time taken for the surgery and measuring postoperative parameters such as pain, trismus, and swelling.
  
  
  METHODS
  Thirty patients having bilateral impacted third molars with the same difficulty index were selected for the study. One side surgical removal was done using micromotor and other side by piezosurgery with an interval of 15 days. After each surgery, time taken to finish was measured and patients were followed up on postoperative days 1, 3, 5, 7, and 15 for assessing pain, trismus, and swelling. Data obtained were statistically analyzed.
  
  
  RESULTS
  The mean time taken for the micromotor group is 37.90 min whereas by the piezosurgery group is 54.63 min, showing a statistically significant difference (P< 0.001). Furthermore, there is statistically significant difference (P< 0.001) in the level of pain, trismus, and swelling on postoperative days 1, 3, 5, and 7. Even the intragroup comparison of piezosurgical group for trismus and swelling showed no statistically significant difference on postoperative day 7, indicating faster recovery of trismus and swelling. On postoperative day 15, there was no difference in any parameter in both groups indicating complete symptom-free recovery in both groups.
  
  
  CONCLUSIONS
  It takes more time to perform surgical extraction of third molars when piezosurgical unit is used. Despite that, it causes less pain postoperatively with faster improvement in trismus and quicker reduction in swelling.
authors.affiliation: Department of Oral and Maxillofacial Surgery, A. B. Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India.
authors.forename: Freddy Kersi
authors.initials: FK
authors.lastname: Mistry
authors.affiliation: Department of Oral and Maxillofacial Surgery, A. B. Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India.
authors.forename: Nidarsh Diwakar
authors.initials: ND
authors.lastname: Hegde
authors.affiliation: Department of Conservative Dentistry and Endodontics, A. B. Shetty Memorial Institute of Dental Sciences, Mangalore, Karnataka, India.
authors.forename: Mithra Nidarsh
authors.initials: MN
authors.lastname: Hegde
keywords: Extraction; lower third molars; micromotor; odontectomy; pain; piezosurgery; swelling; trismus