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12 Implant Tribune Italian Edition - Marzo 2016 Speciale Digital Dentistry < < pagina 11 These outcomes differ from those reported on 2-D variations of the alveolar process13 or of the bony crest.10,11 In those studies, howev- er, a single reference point was used, while the global volume of the ROI was analyzed in the pres- ent study. Moreover, the studies on bony crest variation did not include measurements of soft-tis- sue dimensions. It has to be con- sidered that the procedure used in the present study allowed for the use of 2-D data too regarding a single intersection point or single plane, and this may have permit- ted a more complete analysis. The 3-D method can be affected by various errors related to the impression, model fabrication, 3-D scanning (reverse engineer- ing phase), mesh creation, 3-D elaboration and superimposition. In the present study, the dimen- sional variations between the two periods (T0 and T1) at the con- tralateral sites were also analyz- ed. Small variations were found, most likely due to the errors in- cluded in the method. The differ- ences between the implant sites and the contralateral sites were highly statistically significant. This, in turn, meant that these errors did not affect the data that this 3-D method produced and the volume differences found were not due to the case or to errors, but to the biological phe- nomenon of resorption. In the present study, a positive linear correlation between the global volume of the ROI and the volume loss was found. This means that the larger the jaw, the larger the resorption. This observation makes it sense- less to investigate volume loss with a superimposed standard- ized grid for analysis. In fact, in the present study, a standardized grid was used with squares of 1 mm in dimension and not a grid that was adapted in dimensions to those of the alveolar process. It has to be considered that the distance between the two adja- cent teeth is not the same in dif- ferent locations and in different subjects, so the area covered by a standardized grid does not in- clude the whole ROI. Moreover, the measures taken in each intersecting plane do not represent the same position in all patients. Consequently, the grid should be adapted to the dimension of the space between the two adjacent teeth. The use of 2-D analysis may be comparable if used in the middle of the ROI be cause it is a reference plane easily detected in all models. From a clinical perspective, the 3-D method may help clinicians to understand in a more objec- tive manner what happens to the alveolar process after tooth extraction and the immediate placement of an implant. Dif- 1. Tan WL, Wong TL, Wong MC, Lang NP. A systematic review of post- extractional alveolar hard and soft tissue dimensional changes in humans. Clin Oral Implants Res. 2012 Feb;23 Suppl 5:1–21. 2. Cerardi A. Caratterizzazione meccanica, geometrica e funzionale di dispositivi biomedicali [doctoral thesis]. [Padua]: University of Padua; 2010 [cited 2015 Jul 16]. 199 p. Available from: http://paduaresearch. cab.unipd.it/2833/. 3. Windisch SI, Jung RE, Sailer I, Studer SP, Ender A, Hämmerle CH. A new optical method to evaluate three- dimensional volume changes of alveolar contours: a methodological in vitro study. Clin Oral Implants Res. 2007 Oct;18(5):545–51. 4. Strebel J, Ender A, Paqué F, Krähenmann M, Attin T, Schmidlin PR. In vivo validation of a three- dimensional optical method to document volumetric soft tissue changes of the interdental papilla. J Periodontol. 2009 Jan;80(1):56–61. 5. Thoma DS, Jung RE, Schneider D, Cochran DL, Ender A, Jones AA, Görlach C, Uebersax L, Graf-Hausner U, Hämmerle CH. Soft tissue volume augmentation by the use of collagen- based matrices: a volumetric analysis. J Clin Periodontol. 2010 Jul;37(7):659–66. 6. Lehmann KM, Kasaj A, Ross A, Kämmerer PW, Wagner W, Scheller H. A new method for volumetric evaluation of gingival reces- sions: a feasibility study. J Periodontol. 2012 Jan;83(1):50–4. 7. Vanhoutte V, Rompen E, Lecloux G, Rues S, Schmitter M, Lambert F. A methodological approach to assessing alveolar ridge preser- vation procedures in humans: soft tissue profile. Clin Oral Implants Res. 2014 Mar;25(3):304–9. 8. Schneider D, Schmidlin PR, Philipp A, Annen BM, Ronay V, Hämmerle CH, Attin T, Jung RE. Labial soft tissue volume evaluation of different techniques for ridge preservation after tooth extraction: a randomized controlled clinical trial. J Clin Periodontol. 2014 Jun;41(6):612–7. 9. Friberg B, Jemt T. Soft tissue augmentation in connection to dental implant treatment using a synthetic, porous material—a case series with a 6-month follow-up. Clin Implant Dent Relat Res. 2012 Dec;14(6):872–81. 10. Botticelli D, Berglundh T, Lindhe J. Hard-tissue alterations following immediate implant placement in extraction sites. J Clin Pe- riodontol. 2004 Oct;31(10):820–8. 11. Sanz M, Cecchinato D, Ferrus J, Pjetursson EB, Lang NP, Lindhe J. A prospective, randomized-controlled clinical trial to evaluate bone preservation using implants with different geometry placed into extraction sockets in the maxilla. Clin Oral Implants Res. 2010 Jan;21(1):13–21. 12. Caneva M, Botticelli D, Morelli F, Cesaretti G, Beolchini M, Lang NP. Alveolar process preservation at implants installed immedia- tely into extraction sockets using deproteinized bovine bone mineral— an experimental study in dogs. Clin Oral Implants Res. 2012 Jul;23(7):789–96. 13. Schropp L, Wenzel A, Kostopoulos L, Karring T. Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003 Aug;23(4):313–23. references ferentiation between hard- and soft-tissue loss cannot be ex- pressed by the data from this 3-D method and requires a different approach, such as surgical re-en- try or radiographic assessment. The 3-D analysis used in the pres- ent study was found to be fast, accurate and non-invasive. Conclusion The 2-D method can be very use- ful for understanding changes at a localized point. The 3-D method proposed is fast- er, more accurate at expressing the volume loss and correlated to the dimensions of the analyz- ed region. The use of this meth- od is consequently highly rec- ommended. Acknowledgments The competent contributions of engineers Gianpaolo Savio, Mat- teo Turchetto and Andrea Cerardi in the automation of the 2-D pro- cesses of measurement are high- ly appreciated. Special thanks go to L.O.R.I. (Noventa Padovana, Italy) and Loripadova Tecnologia (Noventa Padovana) for support in the 3-D processing and to the Ariminum Research and Dental Education Center, Ariminum Od- ontologica, for data analysis and interpretation. The implants and impression material were pro- vided by Sweden & Martina (Due Carrare, Italy). Competing interests: the authors declare that they have no competing interests related to this study. L’articolo è stato pubblicato su Journal of Oral Science & Rehabilitation No. 1, 2015 Nasce una nuova testata La ricorrenza dei dieci anni dell’edizione italiana di Dental Tribune ha dato lo spunto per sot- tolineare un’altra importante ri- correnza editoriale: la nascita di una nuova testata che va ad ag- giungersi alla grande famiglia di Dental Tribune International. Il Journal of oral science and reha- bilitation, diretto da Ugo Covani, è stato presentato ufficialmente nel corso della serata e fatto cir- colare tra i partecipanti al Con- gresso. L’iniziativa editoriale può appa- rire decisamente coraggiosa in tempi di crisi della stampa car- tacea, e soprattutto in considera- zione del fatto che in circolazio- ne vi sono altre testate analoghe. Ma nello spiegare le condizioni che ne hanno ispirato l’origine, Covani le fa risalire all’attivi- tà di un gruppo di ricercatori impegnati, a partire dagli anni ’80, nello sviluppo dell’implan- tologia, allorché il concetto di osteointegrazione cominciò a influenzare talmente gli sviluppi dell’odontoiatria al punto da es- ser giudicata “specialità indipen- dente”. All’origine della nascita della rivista vi è anche un nuovo con- cetto di “riabilitazione”, che dagli angusti confini del passato si allarga ora fino ad abbracciare il complesso radice/co- rona, fino a compren- dere aspetti protesici e biologici dei tessuti duri e molli. Obiet- tivo dichiarato della nuova rivista, sotto- posta a impact factor, è di costituire pertan- to una piattaforma comune per clinici e ricercatori, in modo da far rientrare nella più ampia accezione di implantologia sia gli aspetti biologici, che clinici ed estetici, spingendo gli stes- si implantologi, che ora si vedono come essenzialmente chi- rurghi, a considerarsi come “coordinatori della riabilitazione orale”. Una concezione, per- tanto, di cui la testa- ta intende farsi promotrice e che presupporrà un approfondimen- to delle conoscenze di chirurgia orale, biologia, riabilitazione e, in generale, stomatologia. Tali concetti vengono ripresi a pag. 6 della testata nella dichia- razione degli obiettivi: «Pro- muovere un veloce scambio di informazioni scientifiche tra accademia, industria e prati- ca quotidiana», e si propone di «pubblicare ricerche originali e di qualità» negli ambiti non solo dell’implantologia, ma anche della parodontologia, della pro- tesica e della chirurgia maxillo- facciale. Dental Tribune Italia