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  • Scientific Scholar  (6)
  • 1
    Online Resource
    Online Resource
    Variation of gingival crevicular fluid volume in early orthodontic tooth movement with clear aligner: A pilot study
    Scientific Scholar ; 2023
    In:  APOS Trends in Orthodontics Vol. 0 ( 2023-09-12), p. 1-6
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 0 ( 2023-09-12), p. 1-6
    Abstract: The objective of this pilot study was to evaluate the crevicular fluid volume (GCF) increase from a quantitative point of view in the first 8 hours of clear aligner treatment. Then, its variation and the amount of Orthodontic Tooth Movement (OTM) obtained with clear aligners was evaluated considering two different protocols, one of 20 h and one of 12 h. Material and Methods: A total of 10 healthy, adult patients were selected to participate in a split-mouth study where an orthodontic treatment with clear aligners was planned. Vestibular crown uncontrolled tipping was planned for upper lateral-posterior sectors. At 0H (baseline), and every hour for the first 8 hours of use, three GCF samples were collected. Then, all patients were asked to wear one random half of the upper aligner for 12 hours per day (Group 1) and the other half for 20 hours per day (Group 2). The GCF samples were measured using the Periotron 8000 device to quantify inflammation. Then, the amount of movement obtained was calculated by considering the FA point shift in mm with Geomagic X Control Software. Results: No differences were found between the extent of inflammation in terms of GCF volume and hours of intermittent force application (group 1 vs group 2). Conclusion: The amount of GCF assessed through Periotron 8000 increases significantly from the moment forces are applied through clear aligners. Considering the limitations of the following pilot study, it would appear that the GCF amount is directly related to the amount of movement obtained.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_60_2023
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2023
    detail.hit.zdb_id: 2732888-0
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  • 2
    Online Resource
    Online Resource
    Clear aligners for Class III malocclusion and severe open bite camouflage: A case report
    Scientific Scholar ; 2023
    In:  APOS Trends in Orthodontics Vol. 0 ( 2023-09-12), p. 1-6
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 0 ( 2023-09-12), p. 1-6
    Abstract: The aim of the study was to describe a clinical case of a Class III malocclusion and severe open bite approached with clear aligners (CAs) and intermaxillary elastics. Case Presentation: A 21-year-old male patient showed to the dental clinic asking for orthodontic treatment. His chief complaint was an unpleasant smile esthetics. The patient showed an oval face with increased length of the lower third of the face, slight mandibular asymmetry, and concave profile. On intraoral evaluation, a bilateral canine and molar Class III with reduced overbite could be seen. Pre-treatment panoramic radiograph showed good root parallelism and presence of all dental elements. Cephalometric values confirmed skeletal Class III (Wits Appraisal = −6.5 mm), increased vertical dimension (FMA = 34.3°), correctly inclined upper incisors and retroclined lower incisors. After discussing the treatment options with the patient, CAs (F22, Sweden and Martina, Due Carrare, Padova, Italy) were chosen to approach this malocclusion together with intermaxillary elastics. After 9 months of active treatment involving 18 sets of aligners, the patient showed correct overbite, bilateral canine e molar Class I, leveled and aligned dental arches, and no signs of radicular or bone resorption. Cephalometric parameters show control of vertical dimension (FMA = 34.4°), upper incisor flaring and lower incisor retroclination, and signs of a dentoalveolar compensation. Conclusion: Careful diagnosis, treatment planning, and clinical management of CAs and intermaxillary elastics led to a successful dentoalveolar compensation featured by good occlusal results, bilateral Class I relationship, and normal overbite which remained stable after 1 year from the end of treatment.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_76_2023
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2023
    detail.hit.zdb_id: 2732888-0
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  • 3
    Online Resource
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    Second molar eruption after resistance factor removal
    Scientific Scholar ; 2023
    In:  APOS Trends in Orthodontics Vol. 13 ( 2023-01-30), p. 55-57
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 13 ( 2023-01-30), p. 55-57
    Abstract: The eruption of the second molars may delay the therapy and lengthen the treatment time. To minimize excessive treatment prolongation, the principle of resistance factor elimination was applied to the unerupted second lower molar through a surgical incision on the occlusal gingival tissue. The 3.7 was successfully erupted and easily bonded the following month, to allow the archwires sequence.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_107_2022
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2023
    detail.hit.zdb_id: 2732888-0
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  • 4
    Online Resource
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    The hybrid approach: A solution to overcome unpredictable movements in clear aligner therapy
    Scientific Scholar ; 2020
    In:  APOS Trends in Orthodontics Vol. 10 ( 2020-06-30), p. 72-77
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 10 ( 2020-06-30), p. 72-77
    Abstract: The clear aligner system has been radically improved in many aspects: New materials, protocols, attachments, and auxiliaries were developed to improve biomechanics. Many movements remain unpredictable, outlining the limits of clear aligners treatment, but a hybrid approach, which combines clear aligners with fixed appliance, is an efficient treatment alternative. This approach significantly reduces overall treatment time and unpredictable movements. The aim of this article is to show the application of the hybrid approach for different types of movements.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_48_2020
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2020
    detail.hit.zdb_id: 2732888-0
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  • 5
    Online Resource
    Online Resource
    Marginal ridge alignment and interproximal bone levels: Evaluation of a possible correlation
    Scientific Scholar ; 2023
    In:  APOS Trends in Orthodontics Vol. 13 ( 2023-07-10), p. 153-160
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 13 ( 2023-07-10), p. 153-160
    Abstract: The purpose of this study was to evaluate whether there is a relationship between the alignment or misalignment of the marginal ridges of posterior teeth and the degree of resorption of interproximal alveolar bone. Material and Methods: Intraoral scans and bitewing radiographs were performed on 50 subjects. The bitewing radiographs were analyzed using the VixWinTM Platinum software, measuring the distance between the cementitious junction and the alveolar ridge at the interproximal level for 32 sites for each patient, defined as bitewing scores. The digital models have been oriented in the three dimensions using the Rhinoceros 3D and the linear distance between two contiguous marginal ridges was measured for each interproximal space. To estimate the entity of the correlation, a separate linear regression was performed on the bitewing score for each mouth quadrant. Using the t -test the significance of each estimated coefficient was determinate ( P 〈 0.05). Results: In the general comparison including all the analyzed elements, the independent variables are partially correlated with each other. Apparently, the relationship between independent and dependent variables appears to be insignificant. Comparing groups of teeth, however, there seems to be a statistically significant correlation ( P 〈 0.05) between canine and lower first premolar in the XZ and YZ planes and between lower first and second molars in the three dimensions. Conclusion: There seems to be a poor correlation at a general level between periodontal conditions of the alveolar bone and the degree of alignment of the marginal ridges.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_228_2022
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2023
    detail.hit.zdb_id: 2732888-0
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  • 6
    Online Resource
    Online Resource
    Palatal skeletal anchorage: multiple applications with a single appliance
    Scientific Scholar ; 2023
    In:  APOS Trends in Orthodontics Vol. 13 ( 2023-07-10), p. 193-195
    Details
    In: APOS Trends in Orthodontics, Scientific Scholar, Vol. 13 ( 2023-07-10), p. 193-195
    Abstract: Using a single bone-borne maxillary appliance with twofold mechanics, that is, rapid palatal expander and nonfrictional distalizing appliance (Pendulum) is a valuable option to treat young-adult patients with poor compliance. In this particular case, the same appliance was used to disinclude 2.3, eliminating reaction forces on the arch. Therefore, the first expansive phase was followed by the distalizing phase. After enough space was obtained for the recovery of tooth 2.3, a triple-looped titanium-molybdenum alloy (TMA) spring was used to perform canine orthodontic traction. The core concept is that digital planning and optimal positioning of two palatal mini-screws can ensure a bicortical anchorage which, in turn, enabled to tolerate the different orthodontic phases. As a matter of fact, a tooth-bone-borne anchorage was followed by a pure bone-borne anchorage with no lost of stability.
    Type of Medium: Online Resource
    ISSN: 2321-1407 , 2321-4600
    URL: Journal
    URL: Article
    DOI: 10.25259/APOS-TIN
    DOI: 10.25259/APOS_7_2023
    Language: English
    Publisher: Scientific Scholar
    Publication Date: 2023
    detail.hit.zdb_id: 2732888-0
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