Electronic toothbrushes cause abrasion to the tooth enamel .
`` Other nonbacterial processes of enamel destruction include abrasion ( involving foreign elements , such as electronic toothbrushes ) , erosion ( involving chemical processes , such as lemon juice ) , and possibly abfraction ( involving compressive and tensile forces ) .Gandara and Truelove , chart titled : `` '' Definitions of Tooth Surface Loss '' ''   ''
Tooth enamel