# Academic performance in the oral surgery subjects of undergraduate dental students: a cross-sectional study

**Authors:** José Wittor De Macedo Santos, Otacílio Luiz Chagas, Roberto Pereira Pimentel, Maísa Casarin, Francisco Wilker Mustafa Gomes Muniz

PMC · DOI: 10.21142/2523-2754-1401-2026-271 · 2025-12-28

## TL;DR

This study found that older students and those using drugs performed worse in oral surgery courses, while female students performed better.

## Contribution

The study identifies age, gender, and drug use as significant factors affecting academic performance in oral surgery among dental students.

## Key findings

- Older students had significantly poorer academic performance in oral surgery.
- Female students outperformed male students in oral surgery subjects.
- Increased drug use was associated with lower academic performance.

## Abstract

This study assessed the factors influencing the academic performance of undergraduate dental students in the field of oral surgery at a public university in southern Brazil.

It included 146 students who were regularly enrolled in an undergraduate dental program, who completed at least one oral surgery subject. The survey questionnaire encompassed various variables, including sex, age, sexual orientation, family income, ethnicity, part-time employment, use of substance (licit or illicit), and whether dentistry was their initial choice for an undergraduate course. Academic performance was gauged using a grading system ranging from 0.0 (lowest possible grade) to 10.0 (highest possible grade). Bi- and multivariable linear regression analyses were performed to examine the associations between the outcome and independent variables.

An inverse relationship between age and academic performance remained significant (β: -0.318; 95% confidence interval [95%CI]: (-0.101--0.034). Female students outperformed male students (β:0.173; 95%CI:0.022-0.400), while students who reported an increase in drug use exhibited lower academic performance (β: -0.158; 95% CI: -0.354--0.001).

It was concluded that academic performance in oral surgery subjects was notably poorer in older students and those who reported increased drug use. Female students, on the other hand, demonstrated better academic performance.

## Full-text entities

- **Diseases:** COVID-19 (MESH:D000086382), substance abuse (MESH:D019966), anxiety (MESH:D001007), traumatic injuries (MESH:D014947), pain (MESH:D010146)
- **Chemicals:** alcohol (MESH:D000438), Licit (-)
- **Species:** Homo sapiens (human, species) [taxon 9606], Nicotiana tabacum (American tobacco, species) [taxon 4097]

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12814947/full.md

---
Source: https://tomesphere.com/paper/PMC12814947