Different designs of Begg torquing auxiliary have been tested to measure the forces produced at the apex of a tooth. Forces at the tooth surface ranged from 0·4 to 3·3 N, equivalent to 0·1–0·9 N at the root apex.
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References
1.
AndreasenG. F. and ZwanzigerD. (1980) A clinical evaluation of the differential force concept as applied to the Edgewise bracket, American Journal of Orthodontics, 78, 25–40.
2.
AndrewsL. F. (1972) Six keys, American Journal of Orthodontics, 62, 296–309.
3.
BacklundE. (1958) Overbite and the incisor angle, Transactions of the European Orthodontic Society, 1958, 277–286.
4.
BeggP. R. (1961) Light arch wire technique, American Journal of Orthodontics, 47, 38–48.
5.
BeggP. R. and KeslingP. C. (1977) Begg Orthodontic Theory and Technique, 3rd edn, Saunders, Philadelphia, 132–133.
6.
BirnieD. J. and OrtonH. S. (1979) The production of pretorqued arch blanks using an 0·018 inch Loper turret, British Journal of Orthodontics, 6, 153–156.
7.
ChanG. (1978) How much force?, Journal of Clinical Orthodontics, 7, 796.
8.
KennedyD. B., JoondephD. R., OsterbergS. K., and LittleR. M. (1983) The effect of extraction and orthodontic treatment on dentoalveolar support, American Journal of Orthodontics, 84, 183–190.
9.
L'AbeeE. M. and SanderinkG. C. H. (1985) Apical root resorption during Begg treatment, Journal of Clinical Orthodontics, 19, 60–61.
10.
OsbornJ. W. (ed.) (1981) A companion to Dental Studies: Dental Anatomy and Embryology, Vol 1, Book 2, Blackwell Scientific Publications, Oxford. 123.
11.
PerlowJ. (1968) A critique of the Begg technique from the standpoint of biomechanics, American Journal of Orthodontics, 54, 407–437.
RamosD. F., WeimerA. D., and HannaM. (1979) A study of the forces produced by various preformed uprighting springs, American Journal of Orthodontics, 76, 637–645.
15.
RockW. P. and WilsonH. J. (1987) Forces exerted by orthodontic aligning archwires, British Journal of Orthodontics, 15, 255–259.
16.
SebancJ., BrantleyW. A., PincsakJ. J., and ConoverJ. P. (1984) Variability of effective root torque as a function of edge bevel on orthodontic archwires, American Journal of Orthodontics, 86, 43–51.
17.
StoreyE. and SmithR. (1952) Forces used in Orthodontics and its relation to tooth movement, Australian Journal of Dentistry, 56, 11–18.
18.
ZachrissonB. V. and AlnaesL. (1974) Periodontal condition in orthodontically treated and untreated individuals. II. Alveolar bone loss: radiographic findings, Angle Orthodontist, 44, 48–55.
