Labial cervical vertical groove (LCVG) distribution and morphometric characteristics

Area of Science:

• Dental Anatomy
• Human Genetics
• Oral Health

Background:

• Labial cervical vertical groove (LCVG) is a dental anomaly affecting the cervical region of upper permanent incisors.
• LCVG can present esthetic, periodontal, and prosthetic concerns for patients.
• Understanding LCVG prevalence and characteristics is crucial for clinical management.

Purpose of the Study:

• To determine the prevalence of Labial cervical vertical groove (LCVG) in a studied population.
• To characterize the distribution, severity, and location of LCVG.
• To explore potential associations with gender and familial occurrence.

Main Methods:

• A cross-sectional study examined 1250 subjects for LCVG.
• A case group (n=66) with LCVG was compared to a control group (n=49).
• LCVG characteristics including tooth type (central I(1), lateral I(2)), configuration, severity, location, gender, and sibling presence were analyzed.

Main Results:

• The overall prevalence of LCVG was 5.3%, predominantly affecting central incisors (I(1)) (93.9%) in a single configuration (71.21%).
• Severe LCVG forms were exclusively observed in I(1), while LCVG in lateral incisors (I(2)) often presented as multi-configurations.
• LCVG was more common in males (p=0.045), and 16.7% of affected individuals had siblings with LCVG.

Conclusions:

• Labial cervical vertical groove (LCVG) primarily impacts central incisors (I(1)) as a single anomaly, with lateral incisors (I(2)) secondarily affected, often in multi-configurations.
• The study suggests a significant genetic influence on LCVG development, supported by familial aggregation and male predilection.
• Specific patterns of LCVG occurrence, including bilateral configurations and crown allocation, further support a genetic basis for this dental anomaly.