Oral Manifestations of Ehlers‐Danlos Syndrome: An Overview

Introduction:

A healthy mouth is essential for simple chewing, painless eating, and clear pronunciation, all of which significantly enhance social interactions and overall well-being. Dental problems such as cavities, gum disease, and misalignment can negatively impact happiness and social life by causing discomfort and loss of oral function. Individuals with Ehlers-Danlos syndrome (EDS) often experience worsened dental health due to both physical and emotional strain. Despite being crucial, oral health is frequently overlooked by various healthcare experts who often assume it to be solely a dentist's concern. Unfortunately, many dentists, even specialists, may lack awareness of the genetic disorders that affect oral health. Additionally, distinguishing oral health issues related to EDS from common dental conditions like cavities and gum disease can be challenging.

What Is Ehlers‐Danlos Syndrome?

Hypermobile joints, hyperextensible skin, and different degrees of tissue fragility are among the symptoms of Ehlers-Danlos syndromes (EDS), a series of genetic connective tissue illnesses. Genetic abnormalities affecting the body's synthesis of collagen, a vital protein for preserving the strength and suppleness of skin, joints, and other tissues, give rise to these disorders. There are thirteen identified subtypes of EDS, and each has unique clinical characteristics and underlying genetics. Even within the same subtype, symptoms might differ greatly from person to person. Common symptoms include persistent pain, frequent joint dislocations, and cardiovascular issues. Because of its varied presentation, rheumatology, dermatology, genetics, and other experts are frequently involved in the diagnosis and treatment of EDS, necessitating a multidisciplinary approach.

How Does Ehlers-Danlos Syndrome (EDS) Affect Dental Health?

Ehlers-Danlos syndrome (EDS) encompasses a group of hereditary connective tissue disorders characterized by hypermobile joints, hyperextensible skin, and varying degrees of tissue fragility. With thirteen distinct forms, each type presents unique clinical features and genetic causes (Malfait et al., 2017). This discussion delves into the complexity of EDS, its impact on dental health, and the limitations of current research in this field.

• EDS Overview: Genetic alterations that impact collagen or enzymes that modify collagen are the cause of Ehlers-Danlos syndrome. A structural protein called collagen plays a critical role in connective tissues, giving skin, joints, and other organs their strength and suppleness. Except for hypermobile EDS (hEDS), the majority of EDS types have monogenic inheritance patterns. Gene mutations of collagen or enzymes that change collagen cause the various clinical characteristics seen in various forms of enamel-deposited disc disease.

• Dental Tissues and Collagen

  • Dental Tissue Structure: Determining how EDS affects oral health requires an understanding of the anatomy of dental tissues. Enamel, dentine, cementum, and pulp make up teeth. According to McGuire et al. (2014), the enamel that makes up the tooth crown's outer layer is mainly composed of hydroxyapatite crystals, with trace amounts of Collagen Type I and VII. Collagen Type VII provides a strong connection between dentine and enamel and is especially concentrated around the dentin-enamel junction.

  • Periodontitis and the Periodontal Ligament: Between the alveolar bone and the tooth root lies the periodontal ligament, a specialized connective tissue that is mostly composed of Collagen types I, III, and XII. One particular aspect of periodontal EDS is periodontitis, an inflammatory disease that affects the tissues that support teeth. Alveolar bone, periodontal ligament, gingiva, and root cementum are all continuously destroyed.

• EDS Dental Anomalies

  • Inadequate Proof of Dental Deviations: The research supporting the different dental issues linked to EDS is still sparse and frequently depends on the personal narratives of those who have been impacted by the disease. Certain dental malformations, including the aberrant dentinogenesis seen in classical EDS, may be connected to specific kinds of EDS (Hakki et al., 2017).

  • Distinctive Manifestations in Oral Soft Tissue: Certain EDS kinds have particular characteristics of the oral soft tissue. Gingival fragility, translucency, and hyperplasia have been noted in certain individuals; the lack of linked gingiva has been identified as a pathognomonic characteristic of periodontal EDS.

• Dental Operations With Local Anesthetics

  • Local Anesthetics' Efficacy: Research indicates that patients with EDS could not benefit as much from local anesthetics when having dental work done. Although articaine exhibits encouraging effects, more studies are required to provide recommendations for particular medications.

• Dental Implants and Oral Health-Related Quality of Life

  • Dental Implant Difficulties: Research has been done on dental implants and EDS, but what is known is that there may be difficulties, especially in periodontal EDS, where there has been evidence of fast peri-implant disease progression. Clinical research on the effectiveness and failure of implants in various EDS forms is essential.

  • Decreased Quality of Life Associated With Oral Health: Those with EDS may report a lower quality of life associated with their oral health, which can be impacted by malocclusion, physical pain, problems with their temporomandibular joints, dental insecurity, and anxiety.

• Evidence's Limitations

  • Insufficient Studies and Genetic Verification: There are gaps in the current data about oral signs of EDS. Understanding gaps are exacerbated by small study populations, the rarity of EDS, and the lack of rigorous clinical examinations. Clinical diagnoses that lack genetic validation impede a thorough understanding of the diverse symptoms present in various kinds of EDS.

  • The Need for Extensive Study: Thorough research is necessary to improve the knowledge of oral health issues connected to EDS. Larger cohorts, molecular information, and genetic confirmation are required to differentiate between the intricate array of symptoms associated with each type of EDS. Single-case reports without a genetic diagnosis unintentionally propagate misinformation and raise doubts in the minds of patients and dentists.

A complicated interaction of hereditary variables affecting collagen and connective tissues results in a variety of clinical symptoms for people with Ehlers-Danlos syndrome. A multimodal approach is necessary to comprehend its impact on oral health, taking into account the structural elements of dental tissues, particular soft tissue manifestations, and difficulties associated with dental operations and implant use. To fully understand the complexities of EDS and its consequences for oral health, more comprehensive research, genetic validation, and larger clinical investigations are urgently needed, as the current body of evidence is inadequate.

Conclusion:

Given the rarity of the majority of Ehlers-Danlos syndrome (EDS) forms and the range of oral health complications they cause, the science must advance via multicenter collaborative studies. These investigations should employ systematic dental checkups and X-ray analysis, and they should involve a significant number of individuals with genetically proven EDS types. The need to create guidelines for disorders of oral health arises from the fact that EDS presents distinct clinical characteristics and processes. Details regarding the genetic differences of the individuals under discussion should always be included in case reports or series on EDS types other than the well-defined hypermobile EDS (hEDS), which is governed by international clinical criteria.