title: Piezosurgical treatment of crestal bone: quantitative comparison of post-extractive socket outcomes with those of traditional treatment.
abstract: OBJECTIVE
  The study aimed to quantitatively compare, for the first time, the clinical outcomes of crestal bone volume resorption in sockets undergoing traditional extraction technique (TET) or piezosurgical extraction technique (PET), also considering the influence of buccal plate thickness.
  
  
  METHODS
  In this prospective study, 19 sockets were randomly treated with TET, and 18 sockets were randomly treated with PET. Furthermore, patients were split into subgroup A, with buccal bone plate thickness (BPT) ≤1 mm, and subgroup B, with BPT>1 mm. Buccal (BCH) and palatal (PCH) cortex height, bucco-palatal ridge (BPR) width were monitored at tooth extraction and after the 4-month post-extractive period of natural healing.
  
  
  RESULTS
  After 4 months, BCH, PCH and BPR width decreased more in the TET than in the PET group, but only the BPR decrease was statistically significant (P = 0.034) after ANOVA test. In both TET and PET groups, all B subgroup patients showed a lower decrease than A subgroup patients for both BCH, PCH and BPR, statistically significant for PCH (P = 0.019) and BPR (P < 0.001) of TET group, and BPR (P = 0.002) of PET group, after ANOVA. Both A and B subgroups of PET showed a statistically significant lower decrease than the corresponding subgroups of TET, comparing A (P = 0.005) and B (P = 0.037) subgroups for BPR, after ANOVA.
  
  
  CONCLUSIONS
  With both thin and thick buccal plates, the piezosurgical extraction technique of teeth significantly decreases the horizontal resorption of the hard tissue ridge, but not the vertical resorption. Moreover, buccal plate thickness seems to be a key factor in post-extractive bone resorption: the thinner the buccal plate the greater the horizontal crestal bone loss.
authors: Unit of Periodontology and Implantology, Department of Biomedical and Neuromotor Sciences, School of Dentistry, University of Bologna, Bologna, Italy.
authors: Sergio
authors: S
authors: Spinato
authors: Department of Integrated Diagnostic and Surgical Sciences, School of Dentistry, University of Genova, Genova, Italy.
authors: Alberto
authors: A
authors: Rebaudi
authors: Private practice, Terranegra di Legnago, Verona, Italy.
authors: Fabio
authors: F
authors: Bernardello
authors: Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia, Modena, Italy.
authors: Carlo
authors: C
authors: Bertoldi
authors: Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
authors: Davide
authors: http://orcid.org/0000-0003-1241-385X
authors: D
authors: Zaffe
mesh_terms: D000328:Adult; D000368:Aged; D000539:Alveolar Process / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D059745:Piezosurgery / Q000379:methods*; D011446:Prospective Studies; D014081:Tooth Extraction / Q000379:methods*; D020390:Tooth Socket / Q000601:surgery*; D016896:Treatment Outcome; D014945:Wound Healing
keywords: bone resorption; piezosurgery; rotary instruments; socket healing; tooth extraction