The 4-mm and 6-mm markings are absent to improve visibility and avoid confusion in reading the markings
The absence of 4 and 6 markings on the Williams graduated probe is primarily due to its design intended for specific dental measurements. The probe typically features markings at intervals that correspond to common periodontal assessment depths, which are more relevant in clinical practice. Additionally, the standardization of markings aids in consistency and accuracy during examinations, focusing on the most critical measurements for dental health assessment.
1. to avoid parallax error 2. to easily distinguish between shallow and deep pockets
to avoid confusion
The 4 and 6 markings on the William's probe were left out to avoid confusion. Without these two numbers, it is easier to determine the size of a pocket given that the numbers are extremely tiny.
A PDT periodontal probe is a specialized dental instrument used to measure the depth of periodontal pockets around teeth, aiding in the diagnosis and monitoring of periodontal disease. It features markings that indicate millimeter measurements, allowing dental professionals to assess gum health and attachment levels accurately. The probe is designed to minimize discomfort for patients while providing precise readings necessary for effective treatment planning. Its use is integral to periodontal examinations and overall oral health assessments.
to avoid confusion
A "perio probe" or "Periodontal Probe" to be exact, is a long thin ( blunt at the end) metallic instrument used by dentists, hygienists and orthodontists to explore inside the mouth. primarily used to check below the gum-line without damaging the gums.
Gingivitis is distinguished from periodontal disease (periodontitis) by the lack of periodontal attachment loss (PAL). PAL is determined by measuring the depth of the space between the tooth and gum (sulcus) with a dental probe, and by measuring the distance from the depth of the sulcus to the cemento-enamel junction, the point dividing the clinical crown from the root of the tooth. A probe depth of 3mm or less is typically considered to be normal. The deeper the depth, the more advanced the periodontitis. Gingivitis is simply inflamed gums with no loss of periodontal attachment. Once there is measurable loss of attachment, it is called periodontitis.
The periodontal instrument used to detect calculus is the explorer, specifically the periodontal explorer. This instrument features a thin, pointed tip that allows dental professionals to carefully probe the tooth surfaces and detect the presence of calculus, plaque, and other irregularities. The tactile sensitivity of the explorer helps in identifying hard deposits that may not be visible to the naked eye.
I think you are referring to the measurements on the 'periodontal Probe'...basically a milimeter ruler that the dentist uses to measure the 'pocket depth' of the gingival sulcas. you want 3 mm or lower.
"Because you already lost bone due to destructive bacteria. Scaling slows the progression of further damage." New AnswerI partly disagree with the answer above. Actually, probe depths should "decrease" when you go from a state of periodontitis to a stable periodontal condition (stable = no inflammation or infection). However, the periodontal destruction that has occured (know as CAL - Clinical Attachment Loss) does not change once the disease is arrested. You may get some clinical attachment "gain," but it is usually minimal without surgery. Your dental hygienist or periodontist will note the changes in perio probe depths before and after debridement of the endotoxins and calculus. You should see 1-3mm reduction after treatment. If the measurements don't decrease, then it may be an indicator that the pocket is not healing, or it was not inflammed previously. If it bleeds or is not light pink in color, then it is still inflammed and needs more attention. Periodontal Educator, Private College (BWD)
Firing order is 1-2-3-4-5-6. You migth be able to check cylinder numbers by looking at the distributor markings.