An aesthetically pleasing smile improves the confidence of the individual many folds. Smile design is the current trend to get back your lost smile.
With an increase in knowledge and awareness patients opt a dentist to correct or modify his / her smile accordingly.
There are various advancements in the field in correcting smiles.
PARAMETERS TO BE NOTED BY A DENTIST:
- Shape & form of the teeth.
- Height & width of the teeth.
- Gum exposure during a smile.
- Profile of the patient.
- The need of the patient.
The entire concept revolves around the correlation between the above-mentioned parameters. A proper diagnosis and treatment plan are necessary for good esthetic outcomes.
The outline of the space that is revealed while smiling is known as the smile zone.
This is differentiated by the curvature of the lip into six basic smile zone as straight, curved, elliptical, bow-shaped, rectangular and inverted.
The loss of symmetry in the zone is corrected by orthodontic or surgical correction techniques. A gummy smile is corrected by gingivectomy, veneering / Botox.
An ideal smile must show the upper anterior teeth completely from its gum margin and 2mm or less of the lower teeth.Tweet
The width of the teeth must be 75 to 85% of its height with only 2mm or less exposure of the gums. Any exposure of the gum beyond 2mm or more is considered a gummy smile.
This can be due to hyperplasia of gingiva, high frenal attachment/hyper functionality of the upper lip muscle.
Veneering is indicated in discolored, stained, fluorosis, & hypoplastic (small teeth) teeth.
It commonly indicated in anterior teeth than the posterior teeth as it might fracture due to the occlusal pressure (force while we bite or chew food) caused in the posterior teeth.
Tooth preparation for veneering is very minimal (around 0.5mm). The shade and shape of the teeth are chosen according to the patient. Ovoid teeth shape for round faces and tapered teeth for long faces.
Teeth edge is shaped sharp for females and blunt for males.Tweet
This should be personalized according to the interest and suit of the patient’s appearance. The impression of the teeth is taken before the tooth preparation to serve as a guide.
The lab technician is informed of all the details to prepare a suitable veneer. The materials commonly used are porcelain/ceramic/zirconia. With improved technologies, CAD-CAM screening and digitization more efficient and conservative designs are prepared.
The dentist must be aware of the history of the patient and must rule out possible causes of failure of the veneer due to Bruxism, grinding of the teeth or other deleterious habits.
The use of botulinum / Botox (BTX) extracted from an anaerobic bacteria Clostridium botulinum was initiated in the late 1970s.
The most commonly used with potential clinical benefits out of the seven types of BTX is BTX-A. They are used in the treatment of excessive muscle contraction and associated conditions.
They are available as a vacuum dried power in a sterile pack. This powder is diluted with a saline solution when required without adding preservatives.
They act by blocking the impulse transmission between the nerve and the muscle by binding to the acceptor sites present either on the nerve or the muscle.
On therapeutic doses, they cause partial denervation (loss of nerve supply) of the muscle and reduced muscle activity. It received approval to be used for the facial cosmetic procedures by 2002.
The individual is checked for any previous allergy to it before the procedure. The preparation of BTX-A 2.5 units on both sides of the upper lip in injected.
The sites of injection are the origins of the targeted muscles. The procedure involves a series of periodic follow up from 2 weeks of the procedure until 24 weeks after the procedure.
This reduces the contractility of the upper lip & subsequently increasing the relative length of the upper lip to a maximum of approximately 6mm. This is usually a multidisciplinary procedure involving a dentist and a cosmetic surgeon. With the rise in the field of cosmetic dentistry as a specialized domain dentist also practice the procedure after proper certifications.
Next time you think of smile correction note down the important pointers mentioned in this article. Do comment on your doubts below.