Dexamethasone Injection Into Pterygomandibular Space Versus Sublingual Space on Post-Operative Sequalae of Lower Third Molar Intervention

Pimrampai Moranon, Teeranut Chaiyasamut, Watus Sakdajeyont, Chakorn Vorakulpipat, Boworn Klongnoi, Sirichai Kiattavornchareon, Natthamet Wongsirichat

Abstract


Background: The surgical removal of lower third molar is still the most common surgical procedure that is done in oral and maxillofacial surgery field and creates the predictable post-operative sequelae such as pain, swelling, stiffness and difficulty in mouth opening. The purpose of this study is to compare pre-operative dexamethasone injection into pterygomandibular space (PGS) and sublingual space (SLS) in lower third molar intervention of post-operative pain, swelling, and limited mouth opening.

Methods: This study is the split-mouth, randomized crossover clinical trial in 30 healthy patients (mean age 21 years). These patients had similar bilateral lower third molar impactions. The patients were randomly divided into two groups receiving either 8-mg dexamethasone injection into SLS or PGS with the 4-week washout period intervention. Clinical assessment of facial swelling and maximum mouth opening was performed before operation and on day 2 and day 7 after operation. The post-operative pain was also measured by patients’ response on pain visual analogue scale (VAS) on the first, second and third day after intervention.

Results: There is no significant difference between PGS group and SLS group in pain and swelling on the second and seventh day after operation. However, PGS group showed a greater degree of limited mouth opening than SLS group on the second day after operation.

Conclusions: This study showed that 8-mg dexamethasone injection into PGS or SLS was not different in reduction of pain, swelling, and limited mouth opening. This result suggests that dexamethasone injection into PGS or SLS is similarly effective.




J Clin Med Res. 2019;11(7):501-508
doi: https://doi.org/10.14740/jocmr3844


Keywords


Lower third molar intervention; Dexamethasone injection; Sublingual space; Pterygomandibular space; Post-operative sequalae

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