While cold water may be the usual temperature of choice, Dr Marques recommends those suffering sensitivity may do better with warm, The Sun reported.
The London-based dentist said: "Cold is the normal type of water to use when brushing your teeth as it has that refreshing and clarifying feeling, although warm water can be good if you have sensitive teeth."
Dr Marques added very hot water should be avoided.
He said: "Very hot water can damage the bristles of your toothbrush in the long term, as well as the added risk of burning your mouth."
To keep your smile stunning, Dr Marques has shared his top tips for caring for your teeth:
1. Use an electric toothbrush
Electric toothbrushes are the most effective way of cleaning your teeth and stop you brushing too hard.
2. Brush twice a day
Brush every morning and just before bed for at least two minutes. Stop after three minutes to prevent wearing the teeth away.
3. Clean between the teeth
Use interdental brushes or floss at least once a day to prevent a build-up of plaque between the teeth.
4. Use a manual brush right
Electric is best, but if you use an manual brush, angle it a 45-degree angle towards the gum and use small circular motions that cover all exposed areas.
5. Apply the right pressure
Brushing too rigorously can wear down the enamel, but too gently will fail to remove plaque.
6. Brush through bleeding gums
Bleeding gums may be off-putting, but they will eventually become less inflamed and healthier.
7. Swish around a mouthwash
Use a nonalcoholic fluoride-containing mouthwash after every brush. Avoid rinsing with water as this washes toothpaste away.
8. Rinse with coconut oil
This helps to remove plaque and bacteria from between the teeth.