Research by Lasisi and Fasanmade shows that
salivary flow rate in uncontrolled diabetes mellitus
patients is lower than controlled diabetes mellitus
patients, with uncontrolled type 2 diabetes mellitus
patients having a low salivary flow rate (Lasisi and
Fasanmade, 2012).
(Karuniawani, 2015) stated that salivary gland
secretion can be stimulated in several ways, such as
with mechanical stimulation. By chewing food,
chewing can increase salivary secretion because
chewing activity will stimulate the parasympathetic
nerves, and dilate blood vessels in the salivary glands.
Salivary secretion is highly dependent on the
nutrients supplied by the blood vessels to the salivary
gland. (Roletta, 2002) states that stimulation with
paraffin mastication increases salivary pH and, in this
research, obtained an average salivary pH of 7.22, as
known salivary pH is affected by salivary flow rate.
The speed of stimulated salivary flow rate with
paraffin mastication has increased, so that the salivary
pH with stimulated flow rate will also increase
(Karuniawati, 2015), (Roletta, 2002).
Glucose is a small molecule that capable to move
easily inside the blood vessels membrane, which can
be removed from blood plasma to gingival fluid
through the gingival sulcus, and reach the saliva.
Enhancement of blood glucose level in diabetes
mellitus patients can lead to the increase of salivary
glucose level (Sumintarti and Rahma, 2015).
The relationship between fasting blood sugar
levels and salivary flow rate and salivary pH (table 2)
has been tested using the Pearson Correlation of
significance p <0.05. Pearson Correlation between
fasting blood sugar levels and salivary flow rate
shows that a non-significant value (p> 0.05) with a
very weak type of positive correlation (r = +0.181).
(Bernardi, 2007) stated that in the uncontrolled of
controlled diabetes mellitus group, there was a
change in salivary flow rate but not significant. In this
research showed that there was a relationship between
salivary flow rate and blood sugar levels. Blood
glucose concentration indicates hyperglycemia is
factor that influences salivary flow rates. In this
research has found the results of normal salivary flow
rate with high blood sugar levels. It can be influenced
by other things that can stimulate salivary secretion.
In this research using masticatory stimulation with
paraffin candy which can increase salivary secretion
(Bernardi, 2007).
Table 2 showed that there was not relationship
between blood glucose and salivary pH in type 2
diabetes mellitus patient. Salivary pH value in the
majorities of the research subjects had. Normal
salivary pH value in fasting blood glucose with high,
moderate, and normal categories, and there were only
3 patients had acid value. (Hedge, 2010) stated that,
there was a significant differences between diabetes
mellitus group and control group. Patients with
diabetes mellitus had acid value in salivary pH, and it
influenced by poor oral hygiene. Other research
stated a different results. According to (Priyanto,
2017), there were not significant relationship between
blood glucose level and salivary pH. There are several
assumption that can explained why there wasn’t any
relationship between blood glucose level with the
acidity of salivary pH. Blood glucose level had
variation value that sometimes up and down which
was due to the endogen factor of each respondents
and was also affected by several non-physics and
environmental factors. The decrease of medicine
effect will leads to the increase of blood glucose level.
while salivary pH affected by overall health factors
such as diabetes mellitus disorders. Xerostomia is
affected by local disturbances in salivary gland,
medicine effects, and stress (Hedge, 2010), (Priyanto,
2017).
Table 3 showed that there was not relationship in
blood glucose level with acetone level in type 2
diabetes mellitus patient. According to (Mitrayana,
2014), acetone is the most abundant compound in
human airway system, and acetone concentration in
airway system was increased in uncontrolled diabetes
patient. According to (Muttaqin, 2012), blood glucose
level and acetone concentration in saliva had a
relationship, that patient with higher blood glucose
will had higher acetone level in their saliva, however
this research was done using
spectroscopy. This
research used diasen to assess the relationship
between blood glucose and acetone level and this
research showed that there wasn’t any significant
relationship using diasen. Diasen is a tool to detect the
acetone level in breath that was applied to type 2
diabetes mellitus patient (Muttaqin, 2012).
Figure 1 showed that there was a relationship
between salivary flow rate and salivary pH. Normal
salivary pH value range 6-7 and depends on the flow
rate. An acidic pH will affect the flow rate become
viscous (Pandey, 2014).
Figure 2 showed that there was a relationship
between acetone level and salivary flow rate. In graph
3 showed that there was a relationship between
acetone level and salivary pH. There is a inverse
relationship between salivary pH and acetone level,
acid value in pH causes an increase in ketoacidosis,
therefore acetone level also increases.