title: In Vivo Evaluation of Two-Piece Implants Placed Following One-Stage and Two-Stage Surgical Protocol in Posterior Mandibular Region. Assessment of Alterations in Crestal Bone Level.
abstract: BACKGROUND
  Endosseous implants can be placed following either two-stage technique requiring second-stage surgery or one-stage technique, which does not involve a second surgical intervention.
  
  
  OBJECTIVE
  The present study was undertaken to evaluate and compare the changes in crestal bone level when two-piece implants were placed in posterior mandibular region following one-stage and two-stage surgical protocol.
  
  
  METHODS
  A parallel group randomized prospective study was designed in which 20 two-piece implants were placed in the posterior mandibular region of 16 partially edentulous healthy patients following either one-stage (Group I) or a two-stage surgical protocol (Group II). Alterations in crestal bone level were assessed with the help of DentaScan at baseline, that is, at the time of implant placement, third month and sixth month.
  
  
  RESULTS
  Nonsignificant differences were seen in both groups in terms of changes in crestal bone level at the final evaluation.
  
  
  CONCLUSIONS
  Hence, it could be concluded that two-piece implants can be placed following one-stage surgical protocol as predictably as when two-stage surgical technique is followed.
authors.affiliation: Department of Periodontics, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, India.
authors.forename: Minkle
authors.initials: M
authors.lastname: Gulati
authors.affiliation: Department of Periodontics, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, India.
authors.forename: Vivek
authors.initials: V
authors.lastname: Govila
authors.affiliation: Department of Periodontics, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, India.
authors.forename: Sunil
authors.initials: S
authors.lastname: Verma
authors.affiliation: Department of Conservative Dentistry & Endodontics, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, India.
authors.forename: Balakrishnan
authors.initials: B
authors.lastname: Rajkumar
authors.affiliation: Department of Periodontics, Chhatrapati Shahuji Maharaj Medical University, Lucknow, India.
authors.forename: Vishal
authors.initials: V
authors.lastname: Anand
authors.affiliation: Department of Oral & Maxillofacial Surgery, Santosh Dental College & Hospital, Ghaziabad, NCR, Delhi, India.
authors.forename: Anuj
authors.initials: A
authors.lastname: Aggarwal
authors.affiliation: Department of Oral & Maxillofacial Surgery, Vinayaka Missions Sankarachariyar Dental College, Salem, Tamil Nadu, India.
authors.forename: Nikil
authors.initials: N
authors.lastname: Jain
mesh_terms: D000328:Adult; D003758:Dental Implantation, Endosseous / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D007194:India; D007576:Jaw, Edentulous, Partially / Q000601:surgery*; D008297:Male; D008334:Mandible / Q000601:surgery*; D011446:Prospective Studies; D055815:Young Adult
keywords: computerized tomography; crestal bone loss; implant