A non-invasive system to manage impacted teeth associated with a large dentigerous cyst
J Orthod. 2022 Mar 24:14653125221088341. doi: 10.1177/14653125221088341. Online ahead of print.
ABSTRACT
A male patient aged 11 years presented a large dentigerous cyst in the lower left quadrant associated with retained deciduous lower lateral incisor and canine and impacted, unerupted corresponding permanent ones. The treatment consisted in marsupialisation and placement of a modified lingual arch that held a tube for decompression used for irrigation of the cystic cavity in a comfortable way for the patient and for the clinician.The same lingual arch was later used as an anchorage method for retained teeth traction. The final records showed complete resolution of the cyst and retained teeth were successfully placed in their correct position in the oral cavity.
PMID:35323071 | DOI:10.1177/14653125221088341
Non-surgical adult class II high-angle treatment with an invisible appliance: A case report
Int Orthod. 2022 Mar;20(1):100605. doi: 10.1016/j.ortho.2021.100605. Epub 2022 Jan 15.
ABSTRACT
This case report describes the complex situation of a young adult Class II hyperdivergent patient treated by premolar extraction with a straight wire lingual appliance. Despite the patient’s refusal to undergo surgical treatment, the dual goals of ideal occlusal relationship and profile improvement were achieved through a well thought-out biomechanical strategy with appropriate extraction choice and anchorage control during space closure. This case report demonstrates the possibility of successfully resolving severe sagittal and vertical discrepancies in an adult patient without surgical treatment using a completely invisible technique. This report also highlights the need for careful planning during the diagnostic and treatment phases.
PMID:35042658 | DOI:10.1016/j.ortho.2021.100605
Space closure by miniscrew-assisted mesialization of an upper third molar and partial vestibular fixed appliance: A case report
Int Orthod. 2022 Mar;20(1):100602. doi: 10.1016/j.ortho.2021.100602. Epub 2022 Jan 7.
ABSTRACT
This case report demonstrates how the use of skeletal anchorage and appropriate orthodontic biomechanics can be used to resolve even complex cases, reducing unwanted dental movements and allowing the use of a partial vestibular appliance. It describes the complete mesialization of the left upper third molar and space closure following extraction of tooth UR7, due to vertical fracture one year after previous endodontic therapy for caries. This therapeutic choice was conditioned by the need not to alter the good pre-existing interarch relationships, and above all by the patient’s request to be treated conservatively, and therefore not to undergo prosthetic implant rehabilitation. The use of orthodontic miniscrews and the careful application of orthodontic biomechanics, based on both direct and indirect anchorage, enabled the treatment objectives to be achieved in a reasonable period of time with reduced treatment costs.
PMID:35012896 | DOI:10.1016/j.ortho.2021.100602
Cephalometric analysis of dental and skeletal effects of Carriere Motion 3D appliance for Class II malocclusion
Am J Orthod Dentofacial Orthop. 2022 May;161(5):659-665. doi: 10.1016/j.ajodo.2020.12.024. Epub 2022 Jan 5.
ABSTRACT
INTRODUCTION: The objective was to describe the dental and skeletal changes obtained using the Carriere Motion Appliance (CMA), lateral cephalogram, and the corresponding cephalometric tracings.
METHODS: A sample of 29 patients with Class II malocclusion (mean age, 12.6 ± 1.7 years) was retrospectively selected. All patients were treated at a single center using a CMA as the primary sagittal correction device. Cephalometric tracings at the beginning and end of treatment were compared. Each cephalometric tracing was performed 3 times by the same operator.
RESULTS: Using the CMA, the 29 patients studied reached dental Class I in 4.4 ± 0.98 months. All measurements were subjected to statistical analysis, paired t test, and all displayed differences between T0 and T1 (P <0.05) except for the SNA. At the end of treatment, the Wits and ANB values were reduced by 1.38 mm and 0.8°, respectively. Overbite and overjet were also reduced by 1.4 mm and 2 mm, respectively. The SNB, FMA, LAFH, and IMPA increased to a lesser extent (ie, 0.7°, 0.4°, 1.5 mm, and 1.5°, respectively).
CONCLUSIONS: The CMA is a rapid and efficient means of correcting Class II malocclusion. Its effects are predominantly dentoalveolar, with minimal skeletal alteration of little clinical significance.
PMID:34996664 | DOI:10.1016/j.ajodo.2020.12.024
Cold Stress, Freezing Adaptation, Varietal Susceptibility of Olea europaea L.: A Review
Plants (Basel). 2022 May 20;11(10):1367. doi: 10.3390/plants11101367.
ABSTRACT
Olive (Olea europaea L.) is an evergreen xerophytic tree characterizing vegetative landscape and historical-cultural identity of the Mediterranean Basin. More than 2600 cultivars constitute the rich genetic patrimony of the species cultivated in approximately 60 countries. As a subtropical species, the olive tree is quite sensitive to low temperatures, and air temperature is the most critical environmental factor limiting olive tree growth and production. In this present review, we explored the detrimental effects caused of low temperatures on olive cultivars, and analyzed the most frequently experimental procedures used to evaluate cold stress. Then, current findings freezing stress physiology and gene are summarized in olive tree, with an emphasis on adaptive mechanisms for cold tolerance. This review might clear the way for new research on adaptive mechanisms for cold acclimation and for improvement of olive growing management.
PMID:35631792 | PMC:PMC9144808 | DOI:10.3390/plants11101367