Hassan Fahmy Hassan Alnimr, Hamida Refai Hassanien And Omniya Abdel Aziz,

ABSTRACT
The Aim Of This Study Is To Compare Two Different Approaches; LA Injections And DN Therapy, For Deactivating MTrPs Within The Jaw Muscles. Subjects And Methods: 100 Eligible Patients With Active MTrPs Within The Jaw Muscles Were Randomly Allocated To One Of Two Study Arms With 1:1 Allocation Ratio By Using Computerized Sequence Generation: The ?intervention? Group Who Underwent DN Of The TrPs Or The Control Group Who Underwent Mepivacaine Injection Of The TrPs. Sixty Patients Dropped Out Throughout The Trial. This Resulted In A Study Sample Which Consisted Of 40 Patients, 20 Patients In Each Group, Of Both Genders (37 Females And 3 Males), Aged Between 14-50 Years (average Of 30.17 Years). Each Patient In Both Groups Received 3 Treatment Sessions At An Interval Of 2 Days In The First Week, 2 Treatment Sessions At An Interval Of 3 Days In The Second Week And One Treatment Session At The End Of The Third Week.

Results: The Results Of This Study Demonstrated That Both Groups Showed Statistically Significant Reduction In Current And Worst Pain At T2. Comparing The Pain Scores At T3 To Those At T2 Showed Insignificant Decrease In The DN Group And Significant Increase In The LA Group. Nevertheless, The Pain Scores At T3 Were Significantly Lower When Compared To Those At The Baseline In Both Groups. There Were No Statistically Significant Changes In MMO Or In PPT In Both Groups Throughout The Study Intervals. Comparing The Two Treatment Modalities Revealed Insignificant Difference In All The Evaluated Parameters Throughout The Study Intervals With The Exception At T3 The Current And Worst Pain Values In The DN Group Was Statistically Significantly Lower Than Those In The LA Group.