Cic edizioni internazionali
Oral Implantology

TRADITIONAL ELASTIC LIGATURES VERSUS SLIDE LIGATION SYSTEM.
A MORPHOLOGICAL EVALUATION

Original Article, 15 - 24
doi: 10.11138/orl/2013.6.1.015
Tag this article
Abstract
Enhanced HTML Full text PDF
Objective. Elastomeric materials play an important role in the orthodontic practice, including the retraction force to move teeth into extraction sites, closing diastemas, selective shifting of the midline and generalized space closure.
Frictional resistance and ligating strength of archwire-bracket-ligature complex occurs during utilization of elastomeric and metallic ligatures when orthodontic forces are applicated. The aim of this study was to analyze elastic deformation of three types of elastomeric ligatures, after clinical use.
Material and Methods. Elastomeric ligatures: ring-shape, transparent, latex ligatures (Leone® S.p.A.), ring-shape, grey, polyurethane ligatures (Micerium® S.p.A.) and grey, polyurethane, Slide low-friction ligatures (Leone® S.p.A.). A total of 9 orthodontic patients undergoing fixed orthodontic therapy were selected. Three specimens were applied, one for each types of ligature, inside the oral cavity of each subject. Samples were kept in the oral cavity for 28 days, ligating 0.16 X 0.22 inches stainless steel archwires to stainless steel premolars brackets (Leone® S.p.A., Sesto Fiorentino, FI, Italy) for
Bidimensional technique. After the pre-established time, the systems of ligature were removed and washed. Control group consisted of 9 unused specimens of each ligation type. Each elastomeric ligature was observed under the scanning electron microscope (SEM) to determine variations in size. The archwire-bracket-ligature complex was also analyzed.
Results. Transparent O-ring ligatures showed significant volumetric and structural changes. The external rounded shape was rather maintained, while the internal shape tended to appear square. Both external and internal diameter significantly increased (p<0.005 and p<0.0001 respectively) while the thickness decreased ( p<0,005) when analyzed with t-test. Polyurethane ring-shape ligatures retained the initial ring design. Both external and internal diameter increased (p<0.0001), while the thickness remained almost unchanged. The internal border was more squared, and showed jagged edges with continuous and irregular extroversions. Grey, polyurethane Slide low-friction ligatures showed a reduced dimensional change. There was a slight increase in two dimensions, length and width, (14-16%) (p<0.05 and p<0.001) while there was a not significant decrease in thickness (10%).
Conclusion. From SEM analysis of ligature morphology it emerges that latex and polyurethane O-ring ligatures endure significant volumetric and structural changes, after clinical use, index of a greater degree of friction and early loss in functionality. Grey, polyurethane Slide low-friction ligatures presented limited variation in size after clinical use.

Vol. XI (No. 1) 2018 January-March

  1. INFRAOCCLUSION OF DECIDUOUS MOLARS: A RETROSPECTIVE ANALYSIS OF PREVALENCE, CHARACTERISTICS AND ASSOCIATION WITH OTHER DENTAL ANOMALIES
    Venza N., Danesi C., Cretella Lombardo E., Gazzani F., Laganà G.
    doi: 10.11138/orl/2018.11.1.001
  2. ACROMEGALY AND MODIFICATIONS OF THE CRANIOFACIAL COMPLEX: ORAL IMPLICATIONS
    Luzzi V., Guarnieri R., Ierardo G., Bossù M., Barbato E., Polimeni A.
    doi: 10.11138/orl/2018.11.1.010
  3. PERI-IMPLANT DISEASES AND CARDIOVASCULAR DISEASE: A SYSTEMATIC REVIEWS
    Papi P., Letizia C., Pompa G.
    doi: 10.11138/orl/2018.11.1.016
  4. COMBINING ORTHODONTIC EXTRUSION AND GUIDED BONE REGENERATION (GBR) FOR BONE AUGMENTATION AND IMPLANT PLACEMENT IN THE AESTHETIC ZONE: TECHNICAL ISSUES AND CASE REPORT
    Caberlotto M., Gobbo M., Bettio E., Soldini C., Ghensi P.
    doi: 10.11138/orl/2018.11.1.024
  5. IMMEDIATE IMPLANT PLACEMENT BY USING BONE-ALBUMIN ALLOGRAFT AND CONCENTRATED GROWTH FACTORS (CGFS): PRELIMINARY RESULTS OF A PILOT STUDY
    Inchingolo F., Ballini A., Georgakopoulos P.G., Inchingolo A.D., Tsantis S., De Vito D., Cantore S., Georgakopoulos I.P., Dipalma G.
    doi: 10.11138/orl/2018.11.1.031
  6. SOFT TISSUE TUNNEL ACCESS INTO THE MANDIBULAR MUCOSA TO OPTIMIZE THE RESULT OF LATERAL MANDIBULAR BONE GRAFTS
    Grecchi F., Gargari M., Grecchi E., Bianco R., Candotto V., Lauritano D.
    doi: 10.11138/orl/2018.11.1.041
  7. HEMIFACIAL MICROSOMIA: CASE REPORT AND LITERATURE REVIEW
    Grecchi F., Candotto V., Mancini G.E., Grecchi E., Gargari M., Lauritano D.
    doi: 10.11138/orl/2018.11.1.052
  8. MULTIDISCIPLINARY ENT-ORTHODONTIC TREATMENT IN A HYPERTENSIVE PATIENT AFFECTED BY SEVERE OSAS
    De Stefani A., Bruno G., Mezzofranco L., Perri A., Marchese Ragona R., Gracco A.
    doi: 10.11138/orl/2018.11.1.059
  9. EXTERNAL ROOT RESORPTION DUE TO IMPACTED THIRD MOLARS
    Kondylidou-Sidira A., Koliniotou-koumpia E., Kaklamanos E.G., Kavadia-Tsatala S., Antoniades K.
    doi: 10.11138/orl/2018.11.1.064
  10. HPV RELATED HEAD AND NECK CARCINOMA: A SHORT LITERATURE REVIEW ON TREATMENTS
    Candotto V., Gargari M., Gaudio R.M., Cura F., Baggi L., Arcuri C., Gatto R., Nardone M., Spadari F., Carinci F.
    doi: 10.11138/orl/2018.11.1.072
  11. MULTIPARAMETRIC EVALUATION OF FITTING ACCURACY FOR DIFFERENT COMBINATIONS OF IMPLANT-ABUTMENT COUPLING AT MARGINAL INTERFACE
    Marrelli M., Vertucci V., Amantea M., Maletta C., Codispoti B., Gargari M., Tatullo M.
    doi: 10.11138/orl/2018.11.1.077
Last Viewed articles: la lista degli ultimi x visitati.
  1. TRADITIONAL ELASTIC LIGATURES VERSUS SLIDE LIGATION SYSTEM.
    A MORPHOLOGICAL EVALUATION

    Condò R., Casaglia A., Armellin E., Condò S.G., Cerroni L.
    doi: 10.11138/orl/2013.6.1.015
credits