I found the new "Clinical Dilemmas" feature in October JADA interesting. Dr. Frank Spear offers his opinion concerning the etiology for "A Patient With Severe Wear on the Anterior Teeth and Minimal Wear on the Posterior Teeth" (JADA 2008;139[10]:1399–1403). I would offer another opinion.
This patient has a Class II retrognathic bite, and is most likely a mouth breather with a tongue thrust swallow, and the posterior teeth never fully erupted. Given his bruxism history and acid reflux symptoms, there is a high probability that he has obstructive sleep apnea and should undergo a sleep study.