In GAP, generalized bone destruction is present that ranges from mild crestal bone resorption to severe alveolar bone destruction, depending on the severity of the disease. There may be a combination of vertical and horizontal bone loss defects. Screening
Early diagnosis of aggressive periodontitis is important as it can cause rapid permanent destruction of the periodontal tissues. It is essential that all patients undergo a routine periodontal examination to screen for any form of periodontal disease during a dental checkup. Clinical examination
At the start of the clinical examination of the gingival and periodontal tissues, the dental practitioner would look at the appearance of the gingiva first. A healthy periodontium in a Caucasian would appear stippled and pink with a knife edge margin where it abuts the tooth (pigmentation may differ in other races). After that, gingival probing depths would be checked. This would normally be carried out using a basic periodontal probe (WHO CPI). On probing, patients with AgP should have evidence of significant periodontal pocket depths and loss of attachment (LOA). Dental practitioners should also be aware of false pocketing around erupting/newly erupted teeth in the mixed dentition phase and also in the presence of gingival inflammation. The presence of bleeding on probing (BOP) should be noted which is an indicator of active disease. Radiographs
Radiographic assessment should be carried out for patients with evidence of periodontitis to observe alveolar bone levels which can help to identify signs of AgP.
Properties
Tallying is often referred to as "base 1", since only one mark – the tally itself – is needed. This is more formally referred to as a unary numeral system. Unlike base 2 or base 10, this is not a positional notation. Since the base 1 exponential function (1x) always equals 1, its inverse does not exist (which would be called the logarithm base 1 if it did exist). There are two ways to write the real number 1 as a recurring decimal: as 1.000..., and as 0.999.... 1 is the first figurate number of every kind, such as triangular number, pentagonal number and centered hexagonal number, to name just a few. In many mathematical and engineering problems, numeric values are typically normalized to fall within the unit interval from 0 to 1, where 1 usually represents the maximum possible value in the range of parameters. Likewise, vectors are often normalized into unit vectors (i.e., vectors of magnitude one), because these often have more desirable properties. Functions, too, are often normalized by the condition that they have integral one, maximum value one, or square integral one, depending on the application. Because of the multiplicative identity, if f(x) is a multiplicative function, then f(1) must be equal to 1. It is also the first and second number in the Fibonacci sequence (0 being the zeroth) and is the first number in many other mathematical sequences. The definition of a field requires that 1 must not be equal to 0. Thus, there are no fields of characteristic 1.