Table 2 Median (min–max) values for the 10-point photonumeric masseter prominence scale between groups at different assessment periods.

From: Exploring botulinum toxin’s impact on masseter hypertrophy: a randomized, triple-blinded clinical trial

Relaxed

Baseline

1 month

3 months

6 months

G1

3 (3–4)#

2 (2–3.7)

3 (2–3)

3 (1–3)

G2

3 (2.5–3)*

2 (1–2)ƒ

2 (1–2)

2 (1–3)

Contracted

G1

3 (2.2–4)

2.5 (2–3.7)

3 (2–3)

3 (2–4)

G2

3 (3–4)*

2 (1–2.7)ƒ

2 (1–2.7)

2 (1.2–2)

  1. Baseline differences compared with follow-ups: *p < 0.02 (relaxed); *p < 0.0001 (contracted).
  2. Baseline differences compared with 3 and 6 month follow-up: #p < 0.03.
  3. Inter-groups differences: ƒp < 0.02 (relaxed); ƒp < 0.03 (contracted).
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