Today, the development of the times has had an impact on changes in people’s lifestyles. People prioritize appearance to support their professional and personal lives. Therefore, many patients come to the dentist to correct the shape of their teeth to achieve good aesthetics and a more harmonious smile. Damage to the shape of the teeth due to caries or dental anomalies in the anterior teeth that are present at birth are the cause of a person’s disharmonious smile [1].

Anomalies in tooth number, structure, and morphology can occur in permanent teeth due to genetic and epigenetic influences. Clinical manifestations of dental anomalies include microdontia, macrodontia, hypodontia and oligodontia. Koch et al. defined abnormal tooth size as a state of dimensional deviation of two standard deviations from the average. Size anomalies manifest clinically in the form of macrodontia and microdontia [2]. Microdontia is a rare phenomenon. The term microdontia (microdentism, microdontism) is defined as the condition of having abnormally small teeth. According to Boyle, “in general microdontia, the teeth are small, the crowns short, and normal contact areas between the teeth are frequently missing” [9].

Microdontia is a dental condition in which a tooth appears to be smaller than the normal tooth size [2]. Generally microdontia occurs in permanent teeth, rarely in primary teeth. Microdontia has two types, which are type 1 microdontia (true microdontia) and type 2 (pseudo microdontia). True microdontia is a tooth size that is smaller than normal in a normal-sized jaw, while pseudo microdontia is all normal teeth size but appears smaller relative to a large jaw. Based on the number of teeth affected, microdontia can be classified as localized microdontia and generalized microdontia. Localized microdontia only involves 1 or 2 teeth, while generalized microdontia involves all teeth. True generalized microdontia is the condition of all normally shaped teeth with a size smaller than the normal average tooth size, while generalized relative microdontia is all small teeth in a large jaw. The etiology of microdontia is multifactorial, but the main causes are genetics and growth and development disorders [10]. The initiating factor or factors responsible for microdontia remain obscure. Genetic factors probably play a role in the formation of microdontia [9].

Microdontia occurs due to deviations at the beginning of tooth growth and development, namely at the bud stage of the 8th intrauterine week. Deviations in tooth development result in ameloblasts and odontoblasts as tooth-forming cells not differentiating optimally, resulting in teeth that are smaller than normal. The main factors that influence dental anomalies are genetic and environmental. Genetic factors influence tooth germs through genes inherited from parents, while environmental factors influence teeth after eruption, such as mechanical and chemical factors [10]. Microdontia can also be an oral manifestation of several syndromes, such as Down Syndrome, ectodermal dysplasia, Silver-Russel Syndrome, William Syndrome, Gorlin- Chaundhry-Moss Syndrome [2].

Anomaly tooth shape can be managed by carrying out restoration treatment, which can be done directly or indirectly. Direct restoration can be carried out using composite materials or using prefabricated materials known as componeer. Composite veneers are available in a wide choice of colors and opacity, so they can mimic the natural color of dentin and enamel. Componeers are manufactured from nanohybrid composite that ensures excellent homogeneity and stability of the enamel shells. Componeer (Coltene, Altstatten, Switzerland) prefabricated veneers are thin composite resin shells (0.3 mm cervically and 0.6-1.0 mm to the incisal edge), made of a pre-polymerized hybrid composite resin, synergy D6 (Coltene). The veneers are cemented with the same hybrid composite resin that they are made from, which has the potential of making the complete restoration as a monoblock unit. The extremely thin veneer (0.3 mm) allows conservation of tooth structure. The micro-retentive inner surface ensures a last bond, therefore, conditioning of the veneer is not required, making it a milestone in veneers. This Componeer treatment is operator friendly, minimally invasive and single appointment procedure [5, 11]. One of the advantages of direct veneers is that the patient’s visit for treatment is shorter compared to indirect veneers [12].

The concept of direct veneer using prefabricated has been developing since the early 1980s, using acrylic known as the Mastique Laminate Veneer System (Caulk, Milford, DE, USA). The intaglio surface of the Mastique Veneer is etched using polyacrylic acid and then the veneer is adapted to the labial surface of the tooth which has been etched using composite and bonding without filler. Mastique veneer has many disadvantages due to technological limitations and poor veneer surface quality. As material technology and adhesives continue to develop, prefabricated veneers made from composites, known as componeers, have developed [12].

Componeer (Coltene, Whaledent) is made from a nanohybrid composite which provides optimal aesthetic, functional, and economical results and is fast to use. Componeer is available in various sizes and has two color choices, which are transparent and bleaching. Choosing the appropriate dentin color under the componeer will give the componeer a natural color. Componeer that are damaged are easier to correct or repair [4, 13, 14].

Based on clinical results and statistical analysis from Parag Dua et al., the study concluded that both “componeers” and direct composite veneers showed minimal changes in color, surface texture, and marginal integrity and displayed excellent gingival response. The gingival responses improved over the period of study. Componeers present a conservative veneering modality and remarkable advancement due to superior esthetics and monobloc properties [13, 14]. Componeers are resin material similar to composite resins used in dentistry. They are thin shells of precured resins; unlike porcelain which contains silica and is similar to glass. Its mechanical strength is much lower than that of porcelain and surface hardness is lesser than porcelain. Porcelain is highly likely to break and get crushed whereas componeers are generally unbreakable. Porcelain has higher chance of chipping off than componeers. Similarly, though the surface hardness in porcelain is more, however, the polishability of porcelain is higher with the result of a glossy appearance. For porcelain veneers or laminates, at least 2 to 3 mm of tooth surface would have to be reduced as the porcelain themselves are about 1 mm thick, whereas componeer only need 0,3 mm to 0,6 mm labial reduce thickness [15].

Even though porcelain is brilliant glossy with a permanent finish, since it is expensive, it cannot be afforded by many. Patients should have different treatment options. Componeers may be the solution to an average working class population. They have considerable advantages for the dentist such as easy and efficient to use, only one session required, quality dental restorations with excellent aesthetic results, no impressions or laboratory necessary, optimum customization (choice of colour, highlighting shape and structure), economical for dentists and patients due to high success, rate and efficiency, and they can be repaired intraorally in one session [15, 16].