The causes of gingivitis have one thing in common, they all directly or indirectly irritate your gums causing an inflammatory response in the process...redness, swelling, and bleeding.
The response can be slight or extreme.
Bacteria grow at a fast and furious pace where it is moist, dark and warm which is why bacterial plaque forms early and often near your gums.
Keeping biofilm aka plaque off your teeth and away from your gums almost always cures gingivitis.
Plaque is no doubt the primary cause but there are many secondary causes of gingivits.
Prenancy gingivitis is a reaction to hormonal changes and increased blood volume. It is important to control because gum disease is a risk factor for pre term labor and low birth weight babies.
fillings or crowns that don't fit properly are impossible to clean and can keep your gums very irritated.
Low vit D and gingivitis is becoming common as more and more of the population is vitamin D deficient.
Mouth breathing and snoring keep fragile gum tissue dried out all night. Once the gums become irritated and sore you are likely to avoid brushing and flossing them. Sore gums from a dry mouth are the start of a vicious cycle that results in chronic gingivitis.
crowded teeth are more difficult to keep clean. Severe crowded teeth may not have enough healthy gum tissue to support and protect them.
Many secondary causes of gingivitis are temporary or can be easily remedied. Focusing on the primary cause ~ removing plaque is a good strategy for curing gingivitis.