Second Molar Extraction in the Treatment of Lower Premolar Crowding

1992 ◽  
Vol 19 (4) ◽  
pp. 299-304 ◽  
Author(s):  
Margaret E. Richardson ◽  
Donald J. Burden
Keyword(s):  
Second Molar ◽  
Lower Arch ◽  
Lower Premolar ◽  
Molar Extraction

Thirty-four children with lower premolar crowding were treated by extraction of second molars. Thirteen cases had mechanical lower arch treatment started not less than 6 months after extractions. The remainder had no treatment in the lower arch. The change in premolar crowding was measured, and the reasons why spontaneous alignment occurred in some cases and not in others were examined.

Late lower arch crowding: The effect of second molar extraction

1990 ◽  
Vol 98 (3) ◽  
pp. 242-246 ◽  
Author(s):  
Margaret Richardson ◽  
D. Orth ◽  
Katherine Mills
Keyword(s):  
Second Molar ◽  
Lower Arch ◽  
Molar Extraction

scholarly journals Effects of Impacted Lower Third Molar Extraction on Periodontal Tissue of the Adjacent Second Molar

2021 ◽  
Vol Volume 17 ◽  
pp. 235-247
Author(s):  
Yuan Zhang ◽  
Xiaohang Chen ◽  
Zilan Zhou ◽  
Yujia Hao ◽  
Huifei Li ◽  
...  
Keyword(s):  
Third Molar ◽  
Periodontal Tissue ◽  
Second Molar ◽  
Third Molar Extraction ◽  
Molar Extraction

scholarly journals Optical metrology analysis of the lower jaw deformations

2011 ◽  
Vol 68 (4) ◽  
pp. 336-340 ◽  
Author(s):  
Ivan Tanasic ◽  
Ljiljana Tihacek-Sojic ◽  
Aleksandra Milic-Lemic
Keyword(s):  
Optical Metrology ◽  
Dental Arch ◽  
Digital Cameras ◽  
Full Field ◽  
Second Molar ◽  
Biomechanical Behavior ◽  
Lower Jaw ◽  
Bone Strains ◽  
Applied Forces ◽  
Lower Premolar

Background/Aim. New optical stereometric methods based on both contact and noncontact mechanisms for displacement measurement have become common methods in biomechanical behavior research of biomaterials, bone and soft tissue. The aim of this study was to register and measure possible deformations of the lower jaw (mandible) with the intact dental arch using optical metrology method. Methods. The system for full field measurement of deformations (strains) comprised of two digital cameras for a synchronized stereoview of the specimen, and the Aramis software. Results. The maximum mandibular bone strains were measured in the regions of the lower first premolar and the lower second molar. In the action force of 500 N simulated in the region of the first lower premolar the intensity of deformation was 86 ?m. The value of maximum strain in the bone around the molars was 24 ?m for the force of 500 N acting on the second lower molar. When it comes to premolars, 3-5 times stronger deformation was observed in the region of the first lower premolar, compared to the deformation values of the second lower premolar area. Conclusion. Under loading of the applied forces the measured strains were in the elastic deformation area, meanning that the dependence of force and deformity is linear. The highest values of strain measurements obtained by the optical method were found in the jaw bone tissue around the loading teeth, and the bony regions of the triangle and mental region. According to the obtained results from the Aramis processing software it can be concluded that this method is applicable in a variety of biomedical research.

The Criteria for Lower Second Molar Extraction

1987 ◽  
Vol 14 (1) ◽  
pp. 1-9 ◽  
Author(s):  
J. T. Dacre
Keyword(s):  
Selection Criteria ◽  
Third Molar ◽  
Second Molar ◽  
The Third ◽  
The Right ◽  
Molar Extraction

The benefits of lower second molar extraction are substantially reduced if the third molar fails to erupt into a satisfactory position. The selection criteria offered by the literature have been tested in a sample of 51 patients. Prediction is uncertain and cases should be followed until such time as a satisfactory third molar position has been achieved. Failure may be unilateral and more often on the right side. The need for follow-up treatment is subjective but may be as many as one in the patients.

The Role of Inter-Canine Width in Late Lower Arch Crowding

1994 ◽  
Vol 21 (1) ◽  
pp. 53-56 ◽  
Author(s):  
Margaret E. Richardson
Keyword(s):  
Second Molar ◽  
Lower Arch

Changes in lower inter-canine width in relation to changes in crowding in the years following second molar eruption were examined in a group of 30 subjects who had an increase in lower arch crowding and a group of 30 subjects who had no such increase in crowding.

Strategic maxillary second-molar extraction in Class II malocclusion

2009 ◽  
Vol 136 (6) ◽  
pp. 878-886 ◽  
Author(s):  
Marcos Roberto de Freitas ◽  
Darwin Vaz de Lima ◽  
Karina Maria Salvatore de Freitas ◽  
Guilherme Janson ◽  
José Fernando Castanha Henriques
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Second Molar ◽  
Molar Extraction
Sign in / Sign up

Export Citation Format

Share Document