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The Ball Mill As A Means Of Investigating The Mechanical Failure Of Dental Materials, Noor Hayaty Abu Kasim Abu Kasim N.H. Dec 1995

The Ball Mill As A Means Of Investigating The Mechanical Failure Of Dental Materials, Noor Hayaty Abu Kasim Abu Kasim N.H.

Noor Hayaty Abu Kasim Abu Kasim N.H.

Objective: The main purpose of this paper is to present a new method of predicting clinical performance using mechanical loading in a ball mill. Methods: A series of four experiments (two involving a hybrid composite and one each on orthodontic brackets and bands) is described in which the ball mill was used to subject specimens to mechanical fatigue. Results: A reproducibility study using composite beam specimens showed no significant difference between the Mean Survival Time (MST) in all the three experimental runs (P = 0.42). When subjected to thermal cycling, the MST of the cycled group was 155.0 min compared …


Medical Investigation Of Suspects By The Police, Jack Tsen-Ta Lee Dec 1995

Medical Investigation Of Suspects By The Police, Jack Tsen-Ta Lee

Jack Tsen-Ta LEE

Although medical examinations and samples taken from suspects' bodies in the course of police inquiries often lead to the discovery of important evidence, Singapore criminal procedure does not appear to empower the police to carry out such medical investigations. Neither does it safeguard the interests of suspects. It is submitted that the Criminal Procedure Code and other statutes should be brought up to date with modern science.