Periodontia and Preventive Dentistry. Journal
of the American
Dental
P. R. Stillman (New York). The Association, January, 1927, xiv, 1.
A healthy mouth is a clean mouth and in any mouth condit,ion which can be spoken of as unclean, restoration to health will mean cleanliness. In the past, this order has been somewhat reversed by attemplts to cleanse mouths without study of the underlying causal factors. To secure a healthy mouth the first thing to be considered is balanced occlusion which makes possible a proper circulation of the blood. In theory this is best accomplished by free use of the jaws, such as was doubtless a necessity to primitive man. 8irch vigorOLIS activity is, however, out of the (luestion and we have to resort to artificial vascular drainage, which of course makes for cleanliness. 111l)yorrliea it is now known that the successful treatment of advancrtl cases is in no wise difillltl it is ills0 apparrut that the inaJiagf~ferent from that of incipient, cases nient, of the incipient, case sliatles iut 0 and comprises the act of prevention. The borderline between physiolog> ant1 pathology is where prevention comes to the fore and the periodontist has applied the eugineerinp technic originally tlevelolwtl in making artificial tlcutures to the natural teeth and to securing physiologic occlusion. Abnormal occlttsiou is the chief factor in the ill health of the periodontiuni. When this is corrected the accumulation of tletritus ceases :lJld the bacteria have no charice to lIlxllriitt(i aild become virulrllt.
Unilateteral Mastication as a’Cause of Trauma*tic Occlusion. Editorial till Items of Interest,
February,
in Den-
1927, xlix, 2.
Dr. Ottolengui, having addressed a form letter to several specialists in periodont,ia in respect, to the lmssible causal relationship between unilateral mastication and traumatic occlusioil, received replies at lengtb. The letter states that gum disease is often more extensive OJI one side of the mouth ancl this seems also to be true of tra,umatic occlusion. Does one of these conditions favor the development of the other and \vhieh comes first! Is there a vicious circle involved? what are the consequences of unilateral mastication and what is the remedy? If a nian neglects to c,hew ou one side salivary calculus is the result and this is a cause of gum disease. Dr. A. II. Merritt, mentious disuse atrophy in addition to salivary calculus as a rcsiilt of unilateral mastication on the d&used side which adds another factor to the causation of gum disease. I)r. 8. F. James of (‘hicapo tioes uot believe that mastication of food is the cause of attrition of teeth which is rather the result of contact Tvith the ant,agoliist,s. This n-ill be fount1 to show bilateral symmetry and hence unilateral mastication may be left out of consideration to some degree. Dr. 1;. Tischler of Boston fintls that while unilateral mastication is c,ommon it is not illl important. factor in traumatic occlusion. More irriportaut is il sort of habit spasm of the neurotic--a grintliup together of the teeth. Dr. 1. IIirschfeld agrees with the author and others that gunl chewing after meals is a salutary custom. Unilateral masticatioli may of cottrse be a factor in traumatic occlusion but not necessarily the most imlmrtant one. Dr. Stillmann believes that t,raumatic occlusion comes before gum disease.