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13 papers found.
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Predictability of orthodontic movement with orthodontic aligners: a retrospective study

Background The aim of this study was to evaluate the predictability of F22 aligners (Sweden & Martina, Due Carrare, Italy) in guiding teeth into the positions planned using digital orthodontic setup. Methods Sixteen adult patients (6 males and 10 females, mean age 28 years 7 months) were selected, and a total of 345 teeth were analysed. Pre-treatment, ideal post-treatment—as...

Comparative SEM analysis of nine F22 aligner cleaning strategies

Biol . 2003 ; 29 . 18. Luca Lombardo , Angela Arreghini, Roberta Maccarrone, Anna Bianchi, Santo Scalia and Giuseppe Siciliani . Optical properties of orthodontic aligners-spectrophotometry analysis of ... three types before and after aging . Progress in Orthodontics . 2015 . DOI10. 1186 /s40510-015-0111-z. 19. Luca Lombardo; Elisa Martines; Valentina Mazzanti; Angela Arreghini; Francesco Mollica; Giuseppe

Stiffness comparison of mushroom and straight SS and TMA lingual archwires

Background The aim of this study is to investigate the relative stiffness of straight and mushroom lingual archwires of different diameters, cross sections and alloys, plotting their load/deflection graphs and using a modified three-point bending test. Methods Fujita’s mushroom archwires and straight lingual archwires of different diameters, cross sections and alloys were derived...

Evaluation of the stiffness characteristics of rapid palatal expander screws

Background The aim of this study is to evaluate the mechanical properties of the screws used for rapid expansion of the upper jaw. Methods Ten types of expansion screw were assessed, seven with four arms: Lancer Philosophy 1, Dentaurum Hyrax Click Medium, Forestadent Anatomic Expander type “S”, Forestadent Anatomic Expander type “S” for narrow palates, Forestadent Memory, Leone A...

Systematic review for orthodontic and orthopedic treatments for anterior open bite in the mixed dentition

Background The treatment options for the early treatment of anterior open bite are still controversial. The aim of this study was to evaluate the actual available evidence on treatments of anterior open bite in the mixed dentition in order to assess the effectiveness of the early treatment in reducing open bite, the most efficacious treatment strategy and the stability of the...

Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion

Background The aim of this study was to provide an updated version of Andrews’ seminal study by exploiting 3D software to analyse the tip, torque and in-out values of two groups of different racial and ethnic background. Methods The analysis was conducted on one Caucasian group (30 individuals) and one of African origin (29). All subjects were adult, in normal occlusion and had...

Optical properties of orthodontic aligners—spectrophotometry analysis of three types before and after aging

Background The aim was to assess and compare absorbance and transmittance values of three types of clear orthodontic aligners before and after two cycles of in vitro aging. Methods Nine samples of orthodontic aligners from three different manufacturers (Invisalign, Align Technology, Santa Clara, CA, USA; All-In, Micerium, Avegno, GE, Italy; F22 Aligner, Sweden & Martina, Due...

Optimal parameters for final position of teeth in space closure in case of a missing upper lateral incisor

measurement. MCL revised the text. All authors read and approved the final manuscript. Authors information Luca Lombardo is Research coordinator. Antonio DErcole and Michele Latini are Resident. Giuseppe

Cone-beam computed tomography evaluation of periodontal and bone support loss in extraction cases

Background The aim of this study was to evaluate, in particular, whether bone resorption occurred at the extraction sites of a group of patients under orthodontic treatment, and, in general, whether extraction treatment predisposes patients to a greater degree of root resorption. Methods The study group comprised 12 class II division 1 malocclusion patients who underwent...

3D FEM comparison of lingual and labial orthodontics in en masse retraction

Background The aim of this study was to compare displacements and stress after en masse retraction of mandibular dentition with lingual and labial orthodontics using three-dimensional (3D) finite element models (FEM). Methods A 3D FEM of each lower tooth was constructed and located as appropriate to Roth's prescription. The 0.018-in. GAC Roth Ovation labial and Ormco 7th...

Changes in the oral environment after placement of lingual and labial orthodontic appliances

Background This study compared the oral hygiene and caries risk of patients treated with labial and lingual orthodontic appliances throughout a prospective evaluation of the status of the oral environment before and after bracket placement. Methods A total of 20 orthodontic patients aged 19 to 23 years were included in the study and were divided into two groups: 10 patients wore...

Frictional resistance exerted by different lingual and labial brackets: an in vitro study

Background Although much has been written on the implications of friction generated between orthodontic archwires and labial brackets, information on lingual brackets is still limited. Hence, we set out to investigate the frictional resistance exerted by different lingual and labial brackets, including both conventional and self-ligating designs. The effect of various factors...