Hi..
Welcome to Healthcare Magic..
I have gone through your query and can very well understand your health concerns..
As per your complain bruising of the roof of mouth along with pain at the ends of roots can be due to
sinus infection or
sinusitis..
As the floor of maxillary sinuses lies close to the root tips of the upper teeth and pain originating from maxillary sinuses can be felt in that area..
I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like PNS view x ray or MRI scan can help in diagnosis and treatment can be done accordingly..
You can be advised a course of antibiotics, anti-inflammatory painkiller like Ibuprofen, decongestants like Pseudoephadrine, do saline
nasal irrigation, steam inhalation and use a humidifier in your room..
You can also be advised decongestant nasal sprays containing
Xylometazoline or
Oxymetazoline..
Avoid spicy and chilled foods..
Do warm compresses around nostrils..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..