###### Abstract  
_Objectives:_ The aim of this study was to assess the relationship between tooth shade among different groups of patients according to their age, gender, and skin color in a Saudi population. _Materials and methods:_ Participants were divided based on age into Group I (10-20 years), Group 2 (21-30 years), Group 3 (31-40 years), and Group 4 (41+ years), and according to gender. Tooth shade was measured by Vita eayshade, Shade scanner, 3D Master shade system. The skin color was determined according to the Firzpatrick Scale. It consists of six shades, namely: I, II, III, IV, V, and VI. The skin complexion of the participants was divided into six categories: white/very fair, fair, light brown, moderate brown, dark brown, and black. _Results:_ One hundred and ninety-eight individuals were recruited. Around 70% were males. Females had 25.4% A2 followed by 22% A1, and 22% A3 shade types, while males had B3 shade (18%) followed by A2 and A3 (15.8%). A statistically significant difference was observed between shade and gender (\(p<0.05\)). A statistically significant difference was observed between shade and age group (\(p<0.05\)), where increased age was correlated with darker teeth shades. Shade A1 was correlated with type I skin color in 57.1% of individuals. Skin color type II had A2 as a dominant shade by 34.1%. A2 and A3 shades were equally observed in skin color III by 20.3%. Overall, statistically significant differences were observed between shade and skin color groups (\(p<0.05\)). _Conclusions:_ In conclusion, the most frequent classical shade noted among male and female participants was shade type A, which represents reddish brownish. Group 2 (21-30 years) had the B3 shade as the most prominent shade type among age groups. Gender, age, and skin types all showed a significant relation with the tooth shade. today 2022 20  
One of the obstacles that most dentists are facing is matching a restoration to a natural tooth shade. However, patients described nearly white teeth as preferable [2; 5]. Identifying the tooth shade will aid dentists in using fewer amounts of shade tabs and guides required to suit the patients' desires. This will also aid in providing better esthetic results according to the patients' age, gender, and skin color. According to [PERSON] et al., young patients were more likely to have teeth with a high value (lighter teeth) [6; 7]. Factors like gender, age, and skin color may contribute to the method of shade selection [8; 9]. In Sudan, for instance, shades A3, A2, and A1 were the most common tooth shades, respectively [10]. [PERSON] et al., in Turkey, reported that shade A2 was most observed in central and lateral incisors for all age groups. For the canines, B3 was most observed for the youngest two groups and A3.5 for the oldest two groups [11]. A study conducted in Jordan comparing tooth shade to skin color revealed that Jordanians have a light tooth value and that people with a dark skin complex have lighter teeth [12]. The skin color of an individual might help the prosthodontist in picking the artificial teeth shade in case of a complete denture [8]. [PERSON] et al. concluded that 50% of persons with low-value teeth had fair skin, whereas 17% had dark skin [6]. However, a study in Nepal [13], and another in India [14], exhibited no difference between all skin colors and tooth shades. Another study conducted in Korea reported that lighter and less chromatic central incisors were characteristics of female subjects in all age groups [15]. [PERSON] et al. revealed that age was stronger than gender in all color coordinates. However, females have lighter teeth than males in the plots [9]. [PERSON] et al. also showed that gender is statistically not related to a color value or Chroma [11]. In Saudi Arabia, a study in the southern region found that the shade gets darker and more yellow with age [16]. However, one ethnic group was examined in this study and could not be generalized to a Saudi Arabia population.