My dad tried electric too, but honestly he never got past that "earthquake" feeling. Ended up switching back to manual—said it felt simpler and cheaper anyway. Guess electric brushes aren't always worth the hassle for everyone...
Interesting perspective, but maybe your dad just didn't find the right electric brush? Some newer models have gentler vibration settings specifically for sensitive mouths. My mom initially hated the buzzing too, but now swears by hers after tweaking the intensity a bit...
Have you checked if your mom's brush has a pressure sensor? Some older folks press way too hard without realizing it, and that buzzing can feel pretty intense. My dad nearly gave up on electric until we found one that flashes red when he's brushing too aggressively...saved his gums, lol.
My mom had a similar issue—she was convinced electric brushes were just too harsh. We ended up getting her one with a pressure sensor too, and at first she was skeptical (you know how parents can be, haha). But after a week or so, she actually admitted it felt better and her gums weren't as sore. Sometimes it's just about finding the right model and giving them time to adjust...sounds like your dad's experience was pretty similar!
I was pretty skeptical about electric brushes too, honestly. My dentist kept recommending one, but I worried it'd be too rough on my gums—they're sensitive enough as it is. Finally gave in and got one with the pressure sensor after my daughter insisted (kids always think they know better, right?). Took me a good two weeks to get used to the buzzing and vibration, but now I actually prefer it. My gums don't bleed nearly as much, and my teeth feel cleaner overall. Still cautious about pressing too hard, though...old habits die hard.