Men are more likely to develop sleep apnea than women and children are, though it is not uncommon in the last two population groups.The risk of OSA rises with increasing body weight, active smoking and age. In addition, patients with diabetes or "borderline" diabetes have up to three times the risk of having OSA. Common symptoms include loud snoring, restless sleep, and sleepiness during the daytime. Diagnostic tests include home oximetry or polysomnography in a sleep clinic. Some treatments involve lifestyle changes, such as avoiding alcohol or muscle relaxants, losing weight, and quitting smoking. Many people benefit from sleeping at a 30-degree elevation of the upper body or higher, as if in a recliner. Doing so helps prevent the gravitational collapse of the airway. Lateral positions (sleeping on a side), as opposed to supine positions (sleeping on the back), are also recommended as a treatment for sleep apnea, largely because the gravitational component is smaller in the lateral position. Some people benefit from various kinds of oral appliances such as the Mandibular advancement splint to keep the airway open during sleep. Continuous positive airway pressure (CPAP) is the most effective treatment for severe obstructive sleep apnea, but oral appliances are considered a first-line approach equal to CPAP for mild to moderate sleep apnea, according to the AASM parameters of care. There are also surgical procedures to remove and tighten tissue and widen the airway. Snoring is a common finding in people with this syndrome.
The 2017 classification of Periodontal Diseases and Conditions includes:Periodontitis:

Necrotizing periodontal diseases
Periodontitis
Periodontitis as a manifestation of systemic diseaseTherefore, in accordance to the 2017 classification, a diagnosis would be achieved through the patient assessment individually on the basis of:

Type
Distribution: localised (up to 30% of teeth) or generalised (more than 30% of teeth) and the molar/incisor pattern
Stage and grading
Stages: I (early/mild) with <15% or <2mm interproximal bone loss, II (moderate) with coronal third of root bone loss, III (severe) with mid third of root bone loss, IV (very severe) with apical third of root bone loss
Grading: A (slow) with <0.5% bone loss/age, B (moderate) with 0.5-1.0% bone loss/age, C (rapid) with >1.0% bone loss/age
Status: stable, remission or unstable (see Table 1)
Risk factors, which include systemic diseases such as diabetes or extrinsic factors such as smoking. Treatment
There is professional agreement among dentists that smoking cessation and good oral hygiene are key to effective treatment and positive outcomes for patients. Similarly, any plaque retentive factors which exist and are modifiable should be corrected, such as overhangs on restorations. Treatment can involve both non-surgical and surgical therapies. The typical initial treatment known to be effective is scaling and root planing (SRP) to mechanically debride the depths of the periodontal pocket and disrupt the biofilm present. This is done using a powered ultrasonic or sonic scaler and/or unpowered hand instruments. "In patients with chronic periodontitis, subgingival debridement (in conjunction with supragingival plaque control) is an effective treatment in reducing probing pocket depth and improving the clinical attachment level.