Corrado Paganelli

Publications of Corrado Paganelli

• HIV-positive status and preservation of privacy: a recent decision from the Italian Data Protection Authority on the procedure of gathering personal patient data in the dental office.

  Authors: Adelaide Conti, Paola Delbon, Laura Laffranchi, Corrado Paganelli, Francesco De Ferrari

  Journal of medical ethics. 02/2012;

  The processing of sensitive information in the health field is subject to rigorous standards that guarantee the protection of information confidentiality. Recently, the Italian Data ProtectionThe processing of sensitive information in the health field is subject to rigorous standards that guarantee the protection of information confidentiality. Recently, the Italian Data Protection Authority (Garante per la Protezione dei Dati Personali) stated their formal opinion on a standard procedure in dental offices involving the submission of a questionnaire that includes the patient's health status. HIV infection status is included on the form. The Authority has stated that all health data collection must be in accordance with the current Italian normative framework for personal data protection and respect the patient's freedom. This freedom allows the patient to decide, in a conscious and responsible way, whether to share health information with health personnel without experiencing any prejudice in the provision of healthcare requested. Moreover, data collection must be relevant and cannot exceed the principles of treatment goals with reference to the specific care of the concerned person. However, the need for recording information regarding HIV infection at the first appointment, regardless of the clinical intervention or therapeutic plan that needs to be conducted, should not alter the standard protection measures of the healthcare staff. In fact, these measures are adopted for every patient.

• Ex vivo measurement reliability using two different cbct scanners for orthodontic purposes.

  Authors: Domenico Dalessandri, Pietro Bracco, Corrado Paganelli, Vicente Hernandez Soler, Conchita Martin

  The international journal of medical robotics + computer assisted surgery : MRCAS. 02/2012;

  BACKGROUND: There are many cone beam computed tomography (CBCT) scanners available on the market: detector technology, algorithm precision, and scanner settings influence image quality. The aim ofBACKGROUND: There are many cone beam computed tomography (CBCT) scanners available on the market: detector technology, algorithm precision, and scanner settings influence image quality. The aim of this study was to compare the accuracy of linear measurements made on images of the same sample obtained using two different CBCT scanners. METHODS: Twenty-eight linear measurements between orthodontic anatomical landmarks that were marked with gutta-percha points on a fresh sacrificed lamb head were taken three times. The head was scanned with two CBCT scanners using different scanning parameters. Digital Imaging and Communications in Medicine (DICOM) images were reconstructed and the same measurements were taken three times by the same operator. Measurements were repeated 4 months later by two operators. RESULTS: There was minimal, clinically significant difference between the measurements taken with the digital caliper or CBCT scanners, but there was no difference between the two different scanners. CONCLUSIONS: There is no clinically significant difference between these two scanners; a difference was found between the CBCT and real anatomical measurements in only a few cases. Copyright © 2012 John Wiley & Sons, Ltd.

• Effectiveness of an indirect bonding technique in reducing plaque accumulation around braces.

  Authors: Domenico Dalessandri, Michela Dalessandri, Stefano Bonetti, Luca Visconti, Corrado Paganelli

  The Angle orthodontist. 08/2011;

  Abstract Objective: To evaluate if the use of an indirect braces bonding protocol for localized enamel etching and adhesive application could help reduce plaque accumulation and demineralizationAbstract Objective: To evaluate if the use of an indirect braces bonding protocol for localized enamel etching and adhesive application could help reduce plaque accumulation and demineralization around the brackets compared with a conventional direct-bonding technique. Materials and Methods: Thirty patients were bonded with a split-mouth approach: two randomly selected opposite quadrants were used as the test sides and the other two as control sides. During the first 6 months, the plaque presence around the braces was recorded monthly according to a plaque accumulation index (PAI), as was the presence of demineralization. PAI values were measured at each of the four bracket sides for every bonded tooth. Analysis of variance was used to identify significant differences between different bracket margins and between test and control sides. Results: Test and control sides differed significantly for PAI measurements from t(1) (1 month after bonding) to t(4) (4 months after bonding), with the highest value of significance (P < .001) at t(1) but with no significant differences from t(5) to t(7) (treatment end). Considering whole-mouth results, different bracket margin PAI scores did not differ significantly. PAI scores were higher at t(1) and progressively decreased during the treatment. At debonding, the onset of 21 new white spots was recorded overall for the control sides and eight new white spots for the test sides. Conclusion: Especially during the first 4 months after brackets placement, this indirect bonding protocol allowed for significant reduction in plaque accumulation around the braces and reduced onset of white spots during the orthodontic treatment.

• Advantages of cone beam computed tomography (CBCT) in the orthodontic treatment planning of cleidocranial dysplasia patients: a case report.

  Authors: Domenico Dalessandri, Laura Laffranchi, Ingrid Tonni, Francesca Zotti, Maria Grazia Piancino, Corrado Paganelli, Pietro Bracco

  Head & face medicine. 02/2011; 7:6.

  Our aim was to discuss, by presenting a case, the possibilities connected to the use of a CBCT exam in the dental evaluation of patients with Cleidocranial Dysplasia (CCD), an autosomal dominantOur aim was to discuss, by presenting a case, the possibilities connected to the use of a CBCT exam in the dental evaluation of patients with Cleidocranial Dysplasia (CCD), an autosomal dominant skeletal dysplasia with delayed exfoliation of deciduous and eruption of permanent teeth and multiple supernumeraries, often impacted. We think that CBCT in this patient was adequate to accurately evaluate impacted teeth position and anatomy, resulting thus useful both in the diagnostic process and in the treatment planning, with an important reduction in the radiation dose absorbed by the patient.

• A comparative pilot study of two dental implant metals in a pig model.

  Authors: Luigi F Rodella, Gaia Favero, Lorenzo Sala, Barbara Buffoli, Giovanni Castelli, Vincenzo Belloni, Corrado Paganelli, Rita Rezzani

  Implant dentistry. 12/2010; 19(6):532-8.

  Successful implant treatment is based on implant stability, absence periimplant inflammation, and a functional interface between implant and bone tissue (direct bone-implant contact). The aim of thisSuccessful implant treatment is based on implant stability, absence periimplant inflammation, and a functional interface between implant and bone tissue (direct bone-implant contact). The aim of this preliminary study on a pig model was to investigate how implant osseointegration was influenced by a new implant alloy. Cobalt-chrome experimental implants were compared clinically and histologically with titanium implants, after a loaded healing period of 6 months. The clinical analyses showed absence of mobility, abscesses, or inflammation, whereas the histological analysis showed the apposition of new bone tissue that established a direct contact with implants. The comparison of different implant alloys revealed no statistical differences between the osseointegration process of tested implants and control titanium implants. This study revealed no significant short-term difference between the use of titanium and a chrome-cobalt alloy in implant effectiveness in the process of osseointegration.

• Dental status of three Egyptian mummies: radiological investigation by multislice computerized tomography.

  Authors: Alessandro Gerloni, Fabio Cavalli, Fulvio Costantinides, Fulvia Costantinides, Stefano Bonetti, Corrado Paganelli

  Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. 07/2009; 107(6):e58-64.

  OBJECTIVE: The aim of the study was to provide a paleopathologic and radiologic overview of the jaws and teeth of 3 Egyptian mummies preserved in the Civic Museum of History and Art in Trieste.OBJECTIVE: The aim of the study was to provide a paleopathologic and radiologic overview of the jaws and teeth of 3 Egyptian mummies preserved in the Civic Museum of History and Art in Trieste. Computerized tomography (CT) imaging and postprocessing techniques were used to examine the oral structures. STUDY DESIGN: A 16-slice CT scanner was used (Aquilion 16; Toshiba Medical Systems Europe, Zoetermeer, The Netherlands). Scans were obtained at high resolution. Orthogonal-plane and 3-dimensional (3D) reconstructions were created along with curved reconstructions of the lower and upper jaws. Determination of decayed/missing teeth (DMT) and decayed/missing/tooth surfaces (DMTs) were made with 3D images. RESULTS: Analyses revealed differences in the embalming techniques and state of preservation of the bodies. Marked wear of the occlusal surfaces was a characteristic finding in all of the mummies. The DMT and DMTs were low compared with values for contemporary populations. Two mummies had fully erupted third molars. All mummies exhibited bone changes consistent with periodontitis. CONCLUSION: The CT evaluations of the oral structures of the mummies provided insight into the dental status and oral diseases of these ancient Egyptians. The low DMT and DMTs values and indications of periodontitis may be associated with the lifestyle of these Egyptians. The fully erupted and well aligned third molars may represent a morphologic adaptation of the arches to the muscular activity associated with grinding tough foods.

• Removal torque of osseointegrated mini-implants: an in vivo evaluation.

  Authors: Luca Giuseppe Favero, Andrea Pisoni, Corrado Paganelli

  European journal of orthodontics. 11/2007; 29(5):443-8.

  The possibility of using osseointegrated implants for orthodontic anchorage is well known. When absolute orthodontic anchorage is needed, mini-implants can be inserted in the non-alveolar bone areaThe possibility of using osseointegrated implants for orthodontic anchorage is well known. When absolute orthodontic anchorage is needed, mini-implants can be inserted in the non-alveolar bone area (e.g. palatal process or retromolar areas of the mandible). However, what happens to these implants at the end of treatment can be a problem as neither trephine explantation nor simply leaving the subgingival part of the implant in the bone permanently are acceptable solutions. In this investigation, 16 Exacta small screw titanium implants (Exacta MS series conical profile, with a diameter of 3.3 mm and a length of 7.0 mm) were used as indirect orthodontic anchorage in 16 adult patients. The site of implant placement was established based on radiological investigations. There were eight palatal and eight retromolar implants inserted in seven males and nine females (mean age 30.3 years). On completion of treatment, the implants were unscrewed to the maximum limits of their removal torque values (RTVs) and the obtained data were analysed using a t-test. An in vitro study before the clinical trial was also undertaken to determine the maximum mechanical resistance of the unscrewing system. The clinical procedure and average RTV (67.91 +/- 12.47 N/cm) were considered compatible with safe, non-invasive removal of the implant followed by rapid anatomical reconstruction of the area involved.

• Mechanical response of bone under short-term loading of a dental implant with an internal layer simulating the nonlinear behaviour of the periodontal ligament.

  Authors: Francesco Genna, Corrado Paganelli, Stefano Salgarello, Pierluigi Sapelli

  Computer methods in biomechanics and biomedical engineering. 6(5-6):305-18.

  We consider a non-standard design for a fixed dental implant, incorporating a soft layer which simulates the presence of the periodontal ligament (PDL). Instead of being aimed at causing an a prioriWe consider a non-standard design for a fixed dental implant, incorporating a soft layer which simulates the presence of the periodontal ligament (PDL). Instead of being aimed at causing an a priori defined stress/strain field within the surrounding bone, upon loading, such a design simply tries to better reproduce the natural tooth-PDL configuration. To do this, the mechanical properties of the internal layer match those of the PDL, determined experimentally to be strongly nonlinear. Three-dimensional finite element analyses show that the presence of such a layer produces (i) a prosthesis mobility very similar to that of a healthy tooth, for several loading conditions, and (ii) a stress/strain distribution substantially different from that arising, upon loading, around a conventional implant. The lack of knowledge of the real mechanical fields existing, under loading, in the bone around a healthy tooth makes it very difficult to state that the stress distribution produced by the modified implant is "better" than that produced by the standard one. Nevertheless, the comparison of the results obtained here, with those of previous refined analyses of the tooth-PDL-bone system, indicates that the modified implant tends to produce a stress distribution in the bone, upon loading, closer to "natural" than that given by the standard one, within the limits imposed by the presence of threads coupling the implant with the bone.