Undesirable dental hard tissue effects hypothetically linked to orthodontics - a microscopic study
Vol. 52 No. 3 Suppl., 2011
This supplement was not sponsored by Outside Organizations.
ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY
Cristina Teodora Preoteasa, Ecaterina Ionescu, Andreea Cristiana Didilescu, Marina Melescanu-Imre, Maria Angelica Bencze, Elena Preoteasa
Like any other medical intervention, the orthodontic treatment may have, besides the positive effects, also unwanted secondary consequences. The aim of this study was to evaluate the changes present in dental hard tissue associated with orthodontic treatment. The stereo-microscopic ex vivo analysis was performed on two sets of maxillary first premolars undergoing orthodontic treatment for a long period of time (12 and 23 months); five teeth with other clinical situations were used as controls. By analyzing the teeth undergoing orthodontics, enamel color alterations were mainly found adjacent to the bracket, more pronounced in the gingival area, suggesting the need for a correct oral hygiene around it. Roughness was higher on the enamel surface corresponding to the bracket's base, aspect linked to the resign impregnation during bonding procedures. At the apical part, changes regarding contour, appearance and surface roughness were noticed. These modifications were suggestive for the presence of apical root resorption. The severity of root resorption was not correlated with the duration of treatment. In conclusion, through microscopic analysis changes that may be associated with orthodontic treatment have been observed in both crown and apical level.
Corresponding author: Cristina Teodora Preoteasa, Assistant, PhD student, e-mail: cristina_5013@yahoo.com
Download PDF Undesirable dental hard tissue effects hypothetically linked to orthodontics - a microscopic study PDFROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY
Eleni Panagouli, D. Venieratos
During educational dissection of the abdomen in a female Caucasian cadaver, an unusual origin of an accessory right hepatic artery from the left gastric artery was observed. The left gastric artery was the first branch of the celiac trunk, but ended trifurcating into two abnormal large gastric branches and an accessory hepatic artery (d=1.27 cm) which entered the right hepatic lobe at the margin between the two lobes and close to the quadrate lobe. An aberrant hepatic artery branching from the left gastric supplies the left lobe of the liver in most of the cases. The irrigation of the right lobe described by us seems to be extremely rare. Nevertheless, this arterial anomaly can be enlightened by embryonic development. The knowledge of existence of aberrant hepatic arteries, either accessory or replacing, is important because they may influence surgical and interventional radiological procedures.
Corresponding author: Eleni Panagouli, Research and Teaching Associate, MD, e-mail: eleni72000@yahoo.gr
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