Dr. Michael J. Trenouth (BSc. BDS, MDS, PhD.)
B.Sc. Hon. Physiology 1967.
B.D.S. Manchester 1970.
F.D.S.R.C.P.S. (Glas ). 1975.
M.D.S. Manchester 1976.
D.Orth.R.C.S. (Eng ). 1978.
D.D.O.R.C.P.S. (Glas ). 1978.
Ph.D. Manchester 1983.
1970 – 1975: Oral Surgery Manchester Dental Hospital.
1975 – 1985: Dental Anatomy and Orthodontics Manchester Dental Hospital.
1985 – 2008: Consultant Orthodontist Royal Preston Hospital.
2008: Retired – completed and published Twin-block trial!
Two alternative designs of Twin-block appliance were allocated randomly to 52 consecutive Class II division 1 patients. One with a Southend clasp on the upper and lower central incisors and one without, otherwise being identical.
The change in ANB angle was -3.5deg for the Southend group and -2.6deg for the Non-Southend group being statistically significant (p=0.004 ). The change in upper incisor angulation was -6.1deg for the Southend group and -12deg for the Non-Southend group being statistically significant ( p=0.005 ). The change in lower incisor angulation was 3.0deg for the Southend group and 6.9deg for the Non-Southend group being statistically significant